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An optical neural chip for implementing complex-valued neural network
Strong learning capabilities (i.e., high accuracy, fast convergence and the capability to construct nonlinear decision boundaries) are achieved by the complex-valued ONC compared to its real-valued counterpart.
Noisy intermediate-scale quantum (NISQ) algorithms
- Kishor Bharti, Alba Cervera-Lierta, Alán Aspuru-Guzik
- Computer Science, PhysicsReviews of Modern Physics
- 21 January 2021
A thorough summary of NISQ computational paradigms and algorithms, which discusses the key structure of these algorithms, their limitations, and advantages, and a comprehensive overview of various benchmarking and software tools useful for programming and testing NISZ devices.
Quantum state discrimination and its applications
This review serves to strengthen the link between results in quantum state discrimination and quantum information applications, by showing the ways in which the fundamental results are exploited in applications and vice versa.
Direct estimations of linear and nonlinear functionals of a quantum state.
- A. Ekert, C. Alves, D. Oi, M. Horodecki, P. Horodecki, L. Kwek
- PhysicsPhysical review letters
- 4 March 2002
We present a simple quantum network, based on the controlled-SWAP gate, that can extract certain properties of quantum states without recourse to quantum tomography. It can be used as a basic…
Quantitative conditions do not guarantee the validity of the adiabatic approximation.
In this Letter, we point out that the widely used quantitative conditions in the adiabatic theorem are insufficient in that they do not guarantee the validity of the adiabatic approximation. We also…
Nonadiabatic holonomic quantum computation in decoherence-free subspaces.
This work demonstrates how to realize nonadiabatic holonomic quantum computation in decoherence-free subspaces by using only three neighboring physical qubits undergoing collective dephasing to encode one logical qubit, and realizes a universal set of quantum gates.
Squeezing Enhances Quantum Synchronization.
It is demonstrated that strong entrainment is possible for small values of squeezing, and in this regime, the states are nonclassical.
Structure of Optimal State Discrimination in Generalized Probabilistic Theories
It is shown that properties in optimal quantum state discrimination are shared in GPTs in general: (i) no measurement sometimes gives optimal discrimination, and (ii) optimal measurement is not unique.
Resolved-sideband Raman cooling of an optical phonon in semiconductor materials
Raman cooling and heating of a longitudinal optical phonon with a 6.23-THz frequency are observed in ZnTe nanobelts. The direction of the energy flow is changed by detuning the frequency of the pump…
WAVE-PARTICLE DUALITY IN MULTI-PATH INTERFEROMETERS: GENERAL CONCEPTS AND THREE-PATH INTERFEROMETERS
For two-path interferometers, the which-path predictability and the fringe visibility are familiar quantities that are much used to talk about wave-particle duality in a quantitative way. We discuss…