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Linear optical quantum computing implementation
The KLM scheme or KLM protocol is an implementation of linear optical quantum computing (LOQC) developed in 2000 by Emanuel Knill, Raymond Laflamme and
KLM_protocol
Paradigm of quantum computer
with linear optical tools. Their work has become known as the "KLM scheme" or "KLM protocol", which uses linear optical elements, single photon sources and
Linear optical quantum computing
Linear_optical_quantum_computing
Secure communication method
(QKD) is a secure communication method that implements a cryptographic protocol based on the laws of quantum mechanics, specifically quantum entanglement
Quantum_key_distribution
Computer programming for quantum computers
computing architectures—such as linear optical quantum computing using the KLM protocol—require specialized hardware, others use gate-based quantum processors
Quantum_programming
Computer hardware technology that uses quantum mechanics
Charles Bennett and Gilles Brassard applied quantum theory to cryptography protocols and demonstrated that quantum key distribution could enhance information
Quantum_computing
Type of quantum circuit construction
to destroy it than to apply the desired operation. For example, the KLM protocol can be used to implement a Controlled NOT gate on a photonic quantum
Quantum_gate_teleportation
Cryptography secured against quantum computers
Apple announced that they were going to upgrade their iMessage protocol with a new PQC protocol called "PQ3", which will use ongoing keying. Apple stated that
Post-quantum_cryptography
Theorem in physics
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Bell's_theorem
Quantum key distribution protocol
BB84 protocol, named after its inventors Charles Bennett and Gilles Brassard in 1984, is a prepare-and-measure quantum key distribution (QKD) protocol, in
BB84
Quantum computing algorithm
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Magic_state_distillation
Definition of quantum circuits
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Clifford_gate
Topics referred to by the same term
Loadable kernel module, a feature various computer operating systems KLM protocol, a way of constructing quantum computers Kolom language, a language of
KLM_(disambiguation)
Interdisciplinary theory behind quantum computing
constructing quantum hardware, and implementing quantum communication protocols. Quantum teleportation, entanglement and the manufacturing of quantum
Quantum_information_science
Quantum key distribution protocol - B92
quantum key distribution (QKD) protocol developed by Charles Bennett in 1992. It is a simplified alternative to the BB84 protocol, using only two non-orthogonal
B92_protocol
Theorem in quantum information science
cloning can be used as an eavesdropping attack on quantum cryptography protocols, among other uses in quantum information science. Fundamental Fysiks Group
No-cloning_theorem
Quantum algorithm for integer factorization
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Shor's_algorithm
Description of a quantum-mechanical system
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Schrödinger_equation
Physical phenomenon
teleportation protocol, its certification is not a universal fact in the sense that depends on the distance used. Then, a particular protocol might be certified
Quantum_teleportation
Basic unit of quantum information
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Qubit
Interdisciplinary research area
classical counterparts. Relying on an efficient thermal state preparation protocol starting from an arbitrary state, quantum-enhanced Markov logic networks
Quantum_machine_learning
Cryptography based on quantum mechanical phenomena
to use Bell's inequalities to achieve secure key distribution. Ekert's protocol for the key distribution, as it was subsequently shown by Dominic Mayers
Quantum_cryptography
Process in quantum computing
_{1}|1\rangle } be the quantum state to be transmitted. With no error-correcting protocol in place, the transmitted state will be correctly transmitted with probability
Quantum_error_correction
Cloud quantum computing platform
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
IBM_Quantum_Platform
Code used in quantum error correction
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Shor_code
Quantum error correcting code
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Gottesman–Kitaev–Preskill code
Gottesman–Kitaev–Preskill_code
Principle in quantum information theory
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
No-communication_theorem
Very general problem in computer science
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Hidden_subgroup_problem
Quantum mechanics idea
In quantum mechanics, entanglement swapping is a protocol to transfer quantum entanglement from one pair of particles to another, even if the second pair
Entanglement_swapping
Sub-field of quantum physics and optics
Secure communication using single photons and entanglement (e.g., BB84 protocol) Photonic Quantum Computing – Using photons as qubits to store and process
Quantum_optics
Aspect of quantum information science
teleportation protocol. Quantum energy teleportation allows energy to be teleported from a sender to a receiver, regardless of location. This protocol works by
Quantum_energy_teleportation
Topological quantum error correcting code
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Surface_code
Elementary particle with negative charge
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Electron
Open-source software development kit
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Qiskit
Deterministic quantum algorithm
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Deutsch–Jozsa_algorithm
Property of computational resources needed
which can be experimentally determined through randomized measurement protocols on quantum processors. Without magic, quantum computers cannot perform
Magic_(quantum_information)
Forecasting rules for quantum computing
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum computing scaling laws
Quantum_computing_scaling_laws
Model of quantum computation
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_Turing_machine
Proposed quantum computer implementation
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Trapped-ion_quantum_computer
Theorem of quantum circuits
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Gottesman–Knill_theorem
Quantum Mechanics in Neural Networks
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_neural_network
Change of basis applied in quantum computing
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_Fourier_transform
Process of "purifying" entangled quantum states
presented the first distillation protocols for pure states in 1996;[citation needed] entanglement distillation protocols for mixed states were introduced
Entanglement_distillation
Quantum key distribution (QKD) protocols are used in quantum key distribution. The first protocol of that kind was BB84, introduced in 1984 by Charles
List of quantum key distribution protocols
List_of_quantum_key_distribution_protocols
Theorem pertaining to the ontology of quantum mechanics
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Pusey–Barrett–Rudolph_theorem
Quantum algorithm
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Bernstein–Vazirani_algorithm
Type of quantum computer
(or topological defect) while the second used a different but related protocol both of which can be understood as Majorana bound states in quantum error
Topological_quantum_computer
Intermediate representation for quantum instructions
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
OpenQASM
Class of quantum error correcting codes
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
CSS_code
Model of quantum computing
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_circuit
protocol. In 2004, Nielsen proposed a protocol to create cluster states, borrowing techniques from the Knill-Laflamme-Milburn protocol (KLM protocol)
Optical_cluster_state
Experimental technology level
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Noisy intermediate-scale quantum computing
Noisy_intermediate-scale_quantum_computing
Optical device which splits a beam of light in two
{a}}_{a}{\hat {a}}_{b}^{\dagger }\right)}.} In 2000 Knill, Laflamme and Milburn (KLM protocol) proved that it is possible to create a universal quantum computer solely
Beam_splitter
Search problem in quantum mechanics
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Hidden linear function problem
Hidden_linear_function_problem
Type of quantum computer built out of Rydberg atoms
} and | r ⟩ {\displaystyle |r\rangle } levels. Consider the following protocol: Apply π {\displaystyle \pi } pulse to control atom (red). Apply 2 π {\displaystyle
Neutral_atom_quantum_computer
Quantum error correction schemes can suppress the logical error rate arbitrarily low
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Threshold_theorem
Type of error correction in quantum computing
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Five-qubit error correcting code
Five-qubit_error_correcting_code
Superconducting qubit implementation
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Transmon
Programming language for quantum algorithms
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Q_Sharp
Atoms kept at temperatures close to absolute zero
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Ultracold_atom
Concept in quantum information theory
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_state_purification
Physical phenomenon
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Spin–lattice_relaxation
Structure that repeats in time; a novel type or phase of non-equilibrium matter
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Time_crystal
Information held in the state of a quantum system
communicating secretly at long distances using the BB84 quantum cryptographic protocol. The key idea was the use of the fundamental principle of quantum mechanics
Quantum_information
Quantum search algorithm
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Grover's_algorithm
Quantum computing applied to natural language processing
2022-11-07 at the Wayback Machine, a Python library for quantum natural language processing FQF, Operational protocol applying QNLP to forensic philology
Quantum natural language processing
Quantum_natural_language_processing
Type of quantum information processing
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Adiabatic_quantum_computation
Magnetic phenomenon
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Spin–spin_relaxation
Computational complexity class of problems
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
BQP
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
List_of_quantum_processors
Restricted model of non-universal quantum computation
circuits Cross-entropy benchmarking Linear optical quantum computing KLM protocol Ball, Philip (December 3, 2020). "Physicists in China challenge Google's
Boson_sampling
Basic circuit in quantum computing
Unfortunately, a working Deutsch gate has remained out of reach, due to lack of a protocol. There are some proposals to realize a Deutsch gate with dipole–dipole
Quantum_logic_gate
Technique for comparing quantum states
{\displaystyle |\psi \rangle } . The state of the system at the beginning of the protocol is | 0 , ϕ , ψ ⟩ {\displaystyle |0,\phi ,\psi \rangle } . After the Hadamard
Swap_test
Theorem in quantum computing
on the macroscopic scale. The Eastin–Knill theorem does not prohibit protocols that provide fault tolerant quantum computation. Some methods of getting
Eastin–Knill_theorem
Quantum computing technique
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Amplitude_amplification
Upper bound on the knowable information of a quantum state
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Holevo's_theorem
Proposed semiconductor implementation of quantum computers
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Spin_qubit_quantum_computer
Quantum cryptographic method
The six-state protocol (SSP) is the quantum cryptography protocol that is the version of BB84 that uses a six-state polarization scheme on three orthogonal
Six-state_protocol
Theorem of quantum information theory
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
No-hiding_theorem
Quantum algorithm for counting solutions to search problems
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_counting_algorithm
Quantum Merlin Arthur
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
QMA
Property of states in quantum mechanics
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_steering
Remote quantum processors for computation
Experiments such as testing Bell's theorem or evaluating quantum teleportation protocols have been performed on publicly available quantum processors. Developers
Cloud-based_quantum_computing
Planned quantum technology campus in Chicago
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Illinois Quantum and Microelectronics Park
Illinois_Quantum_and_Microelectronics_Park
Point defect in diamonds
exploited by applying a carefully designed sequence of microwave pulses. Such protocols are rather important for the practical realization of quantum computers
Nitrogen-vacancy_center
Protocol in quantum cryptography
state protocol is a quantum key distribution (QKD) scheme. Practical QKD systems use multi-photon sources, in contrast to the standard BB84 protocol, making
Decoy_state
Superconducting qubit implementation
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Charge_qubit
Quantum state
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Dicke_state
Computational complexity of quantum algorithms
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_complexity_theory
Algorithm to be run on quantum computers
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_algorithm
Quantum algorithm
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Variational quantum eigensolver
Variational_quantum_eigensolver
Quantum mechanical macroscopic object
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_machine
Computational benchmark
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_supremacy
Quantum logic gate
2\rangle } ) would be affected, but are never populated throughout the protocol, since ground state cooling is assumed. Namely the one whose frequency
Cirac–Zoller controlled-NOT gate
Cirac–Zoller_controlled-NOT_gate
Method for assessing quantum computer hardware capabilities
measuring the average error rates of quantum computing hardware platforms. The protocol estimates the average error rates by implementing long sequences of randomly
Randomized_benchmarking
Quantum-mechanical version of computer memory
superposition state for 100 nanoseconds. GEM (Gradient Echo Memory) is a protocol for storing optical information and it can be applied to both atomic gas
Quantum_memory
Metric for a quantum computer's capabilities
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quantum_volume
Quantum instruction set architecture
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Quil (instruction set architecture)
Quil_(instruction_set_architecture)
Method of inferring the results of a computation without running a quantum computer
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Counterfactual quantum computation
Counterfactual_quantum_computation
Model of computation
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
One_clean_qubit
Theorem in quantum mechanics
implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion QC Spin-based Kane QC Spin
Gleason's_theorem
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KLM PROTOCOL
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