Proof-of-principle experimental demonstration of quantum gate verification
arXiv:2107.13466 · doi:10.1103/PhysRevA.105.012614
Abstract
To employ a quantum device, the performance of the quantum gates in the device needs to be evaluated first. Since the dimensionality of a quantum gate grows exponentially with the number of qubits, evaluating the performance of a quantum gate is a challenging task. Recently, a scheme called quantum gate verification (QGV) has been proposed, which can verifies quantum gates with near-optimal efficiency. In this paper, we implement a proof-of-principle optical experiment to demonstrate this QGV scheme. We show that for a single-qubit quantum gate, only samples are needed to confirm the fidelity of the quantum gate to be at least with a confidence level using the QGV method, whereas, at least samples are needed to achieve the same result using the standard quantum process tomography method. The QGV method validated by this paper has the potential to be widely used for the evaluation of quantum devices in various quantum information applications.
References in corpus (42)
- Entanglement detection
- Randomized Benchmarking of Quantum Gates
- Robust randomized benchmarking of quantum processes
- Direct Fidelity Estimation from Few Pauli Measurements
- Linear Optics C-Phase gate made simple
- Demonstration of an optical quantum controlled-NOT gate without path interference
- Randomized Benchmarking with Confidence
- Adaptive quantum state tomography improves accuracy quadratically
- Choice of Measurement Sets in Qubit Tomography
- Optimal verification of entangled states with local measurements
- Efficient Verification of Pure Quantum States in the Adversarial Scenario
- Using and reusing coherence to realize quantum processes
- Experimental Adaptive Bayesian Tomography
- Quantum process tomography via completely positive and trace-preserving projection
- General framework for verifying pure quantum states in the adversarial scenario
- Efficient Verification of Hypergraph States
- Optimal Verification of Two-Qubit Pure States
- Optimal verification and fidelity estimation of maximally entangled states
- Efficient verification of bipartite pure states
- Optimal verification of general bipartite pure states
- Efficient verification of Dicke states
- Experimental Optimal Verification of Entangled States using Local Measurements
- Heralded non-destructive quantum entangling gate with single-photon sources
- Optimal Verification of Greenberger-Horne-Zeilinger States
- Optimal verification of stabilizer states
- Estimating the fidelity of T gates using standard interleaved randomized benchmarking
- Randomized benchmarking for individual quantum gates
- Experimental adaptive process tomography
- Towards the standardization of quantum state verification using optimal strategies
- Experimental Quantum Process Discrimination
- Activation of entanglement from quantum coherence and superposition
- Efficient verification of quantum processes
- Objective Compressive Quantum Process Tomography
- Efficient verification of quantum gates with local operations
- Quantum process tomography of a controlled-phase gate for time-bin qubits
- Experimental realization of self-guided quantum process tomography
- Quantum process tomography of a high-dimensional quantum communication channel
- Quantum gate verification and its application in property testing
- Universally Optimal Verification of Entangled States with Nondemolition Measurements
- Practical and reliable error bars for quantum process tomography
- Quantum process tomography with unknown single-preparation input states
- Quantum process tomography via optimal design of experiments