The SWITCH test for discriminating quantum evolutions

• URL: http://arxiv.org/abs/1706.06564v2
• Date: Tue, 14 Feb 2023 15:50:27 GMT
• Title: The SWITCH test for discriminating quantum evolutions
• Authors: Pedro Chamorro-Posada and Juan Carlos Garcia-Escartin
• Abstract summary: We propose a quantum circuit to discriminate between two arbitrary quantum evolution operators. The relation of the proposal to the SWAP test for discriminating two quantum states is analyzed.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a quantum circuit to discriminate between two arbitrary quantum evolution operators. It permits to test the equality of two quantum operators and to estimate a fidelity measure of them. The relation of the proposal to the SWAP test for discriminating two quantum states is analyzed. We also discuss potential applications for the discrimination of quantum communication channels and possible laboratory implementations with light along the same lines of recent experimental realizations of quantum superpositions of causal orders exploiting the different degrees of freedom of photons. We also discuss hardware efficient realizations for noisy intermediate scale quantum computers.

Related papers

• Unambiguous discrimination of general quantum operations [14.537575399621572]
  We experimentally demonstrate the optimal discrimination of up to 6 displacement operators and the unambiguous discrimination of non-unitary quantum operations. Our results are expected to stimulate a wide range of valuable applications in the field of quantum sensing.
  arXiv  Detail & Related papers  (2024-04-20T08:22:04Z)
• QuantumSEA: In-Time Sparse Exploration for Noise Adaptive Quantum Circuits [82.50620782471485]
  QuantumSEA is an in-time sparse exploration for noise-adaptive quantum circuits. It aims to achieve two key objectives: (1) implicit circuits capacity during training and (2) noise robustness. Our method establishes state-of-the-art results with only half the number of quantum gates and 2x time saving of circuit executions.
  arXiv  Detail & Related papers  (2024-01-10T22:33:00Z)
• Toward coherent quantum computation of scattering amplitudes with a measurement-based photonic quantum processor [0.0]
  We discuss the feasibility of using quantum optical simulation for studying scattering observables that are presently inaccessible via lattice QCD. We show that recent progress in measurement-based photonic quantum computing can be leveraged to provide deterministic generation of required exotic gates.
  arXiv  Detail & Related papers  (2023-12-19T21:36:07Z)
• A vertical gate-defined double quantum dot in a strained germanium double quantum well [48.7576911714538]
  Gate-defined quantum dots in silicon-germanium heterostructures have become a compelling platform for quantum computation and simulation. We demonstrate the operation of a gate-defined vertical double quantum dot in a strained germanium double quantum well. We discuss challenges and opportunities and outline potential applications in quantum computing and quantum simulation.
  arXiv  Detail & Related papers  (2023-05-23T13:42:36Z)
• Quantum Imitation Learning [74.15588381240795]
  We propose quantum imitation learning (QIL) with a hope to utilize quantum advantage to speed up IL. We develop two QIL algorithms, quantum behavioural cloning (Q-BC) and quantum generative adversarial imitation learning (Q-GAIL) Experiment results demonstrate that both Q-BC and Q-GAIL can achieve comparable performance compared to classical counterparts.
  arXiv  Detail & Related papers  (2023-04-04T12:47:35Z)
• Efficient Bipartite Entanglement Detection Scheme with a Quantum Adversarial Solver [89.80359585967642]
  Proposal reformulates the bipartite entanglement detection as a two-player zero-sum game completed by parameterized quantum circuits. We experimentally implement our protocol on a linear optical network and exhibit its effectiveness to accomplish the bipartite entanglement detection for 5-qubit quantum pure states and 2-qubit quantum mixed states.
  arXiv  Detail & Related papers  (2022-03-15T09:46:45Z)
• Depth-efficient proofs of quantumness [77.34726150561087]
  A proof of quantumness is a type of challenge-response protocol in which a classical verifier can efficiently certify quantum advantage of an untrusted prover. In this paper, we give two proof of quantumness constructions in which the prover need only perform constant-depth quantum circuits.
  arXiv  Detail & Related papers  (2021-07-05T17:45:41Z)
• Implementation of hybridly protected quantum gates [2.3274138116397727]
  We explore the implementation of hybridly protected quantum operations based on a simple and experimentally achievable spin model. The protected quantum operations are controllable, well-suited for resolving various quantum tasks. Our scheme is based on experimentally achievable Hamiltonian with reduced requirement of computational resources.
  arXiv  Detail & Related papers  (2021-05-11T10:04:02Z)
• Quantum-enhanced radiometry via approximate quantum error correction [0.22932165857761397]
  We report an experimental demonstration of a quantum enhancement in sensing with a bosonic probe with different encodings. In a practical radiometry scenario, we attain a 5.3 dB enhancement of sensitivity, which reaches $9.1times10-4,mathrmHz-1/2$ when measuring the excitation population of a receiver mode.
  arXiv  Detail & Related papers  (2021-03-18T14:24:22Z)
• Demonstration of quantum advantage by a joint detection receiver for optical communications using quantum belief propagation on a trapped-ion device [0.7758302353877525]
  We present an experimental realization of a quantum joint detection receiver for binary phase shift keying codewords of a 3-bit linear tree code. The receiver, translated to a quantum circuit, was experimentally implemented on a trapped-ion device. We provide an experimental framework that surpasses the quantum limit on the minimum average decoding error probability.
  arXiv  Detail & Related papers  (2021-02-25T18:05:31Z)
• Information Scrambling in Computationally Complex Quantum Circuits [56.22772134614514]
  We experimentally investigate the dynamics of quantum scrambling on a 53-qubit quantum processor. We show that while operator spreading is captured by an efficient classical model, operator entanglement requires exponentially scaled computational resources to simulate.
  arXiv  Detail & Related papers  (2021-01-21T22:18:49Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.