Results 31 to 40 of about 1,648,966 (299)
Quantum circuits for quantum channels [PDF]
Physical Review A, 2017 We study the implementation of quantum channels with quantum computers while minimizing the experimental cost, measured in terms of the number of Controlled-NOT (C-NOT) gates required (single-qubit gates are free). We consider three different models. In the first, the Quantum Circuit Model (QCM), we consider sequences of single-qubit and C-NOT gates ...
Iten, Raban +2 more
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Quantum circuit cutting with maximum-likelihood tomography
npj Quantum Information, 2021 We introduce maximum-likelihood fragment tomography (MLFT) as an improved circuit cutting technique for running clustered quantum circuits on quantum devices with a limited number of qubits.
Michael A. Perlin +3 more
doaj +1 more source
NONUNITARY QUANTUM CIRCUIT [PDF]
International Journal of Quantum Information, 2005 A quantum circuit is generalized to a nonunitary one whose constituents are nonunitary gates operated by quantum measurement. It is shown that a specific type of one-qubit nonunitary gates, the controlled-NOT gate, and all one-qubit unitary gates constitute a universal set of gates for the nonunitary quantum circuit, without the necessity of ...
Terashima, H., Ueda, M.
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Privacy and correctness trade-offs for information-theoretically secure quantum homomorphic encryption [PDF]
Quantum, 2023 Quantum homomorphic encryption, which allows computation by a server directly on encrypted data, is a fundamental primitive out of which more complex quantum cryptography protocols can be built.
Yanglin Hu +2 more
doaj +1 more source
Quantum circuits for isometries [PDF]
Physical Review A, 2016 We consider the decomposition of arbitrary isometries into a sequence of single-qubit and Controlled-NOT (C-NOT) gates. In many experimental architectures, the C-NOT gate is relatively 'expensive' and hence we aim to keep the number of these as low as possible.
Iten, Raban +4 more
openaire +4 more sources
A Method Based on Timing Weight Priority and Distance Optimization for Quantum Circuit Transformation. [PDF]
Entropy (Basel), 2023 In order to implement a quantum circuit on an NISQ device, it must be transformed into a functionally equivalent circuit that satisfies the device’s connectivity constraints.
Qian Y, Guan Z, Zheng S, Feng S.
europepmc +2 more sources
CoRR, 2022 Existing quantum systems provide very limited physical qubit counts, trying to execute a quantum algorithm/circuit on them that have a higher number of logical qubits than physically available lead to a compile-time error. Given that it is unrealistic to expect existing quantum systems to provide, in near future, sufficient number of qubits that can ...
Movahhed Sadeghi +2 more
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A Beam Search Framework for Quantum Circuit Mapping. [PDF]
Entropy (Basel)In the era of noisy intermediate-scale quantum (NISQ) computing, the limited connectivity between qubits is one of the common physical limitations faced by current quantum computing devices. Quantum circuit mapping methods transform quantum circuits into
Qiu C, Zhu P, Wei L.
europepmc +2 more sources
A verified optimizer for Quantum circuits [PDF]
Proceedings of the ACM on Programming Languages, 2021 We present VOQC, the first fully verified optimizer for quantum circuits, written using the Coq proof assistant. Quantum circuits are expressed as programs in a simple, low-level language called SQIR, a simple quantum intermediate representation, which is deeply embedded in Coq.
Kesha Hietala +4 more
openaire +2 more sources
Quantum Circuit Synthesis Using Projective Simulation
Inteligencia Artificial, 2021 Quantum Computing has been evolving in the last years. Although nowadays quantum algorithms performance has shown superior to their classical counterparts, quantum decoherence and additional auxiliary qubits needed for error tolerance routines have been ...
Otto Menegasso Pires +3 more
doaj +1 more source