Tomography of a Feedback Measurement with Photon Detection
arXiv:1910.03852 · doi:10.1103/PhysRevLett.124.070502
Abstract
Quantum measurement is essential to both the foundations and practical applications of quantum information science. Among many possible models of quantum measurement, feedback measurements that dynamically update their physical structure are highly interesting due to their flexibility which enables a wide range of measurements that might otherwise be hard to implement. Here we investigate by detector tomography a measurement consisting of a displacement operation combined with photon detection followed by a real time feedback operation. We design the measurement in order to discriminate the superposition of vacuum and single photon states -- the single-rail qubit -- and find that it can discriminate the superposition states with a certainty of 96\%. Such a feedback-controlled photon counter will facilitate the realization of quantum information protocols with single-rail qubits as well as the non-locality test of certain entangled states.
References in corpus (32)
- Quantum Cryptography
- Review article: Linear optical quantum computing
- Device-independent security of quantum cryptography against collective attacks
- Steering, Entanglement, Nonlocality, and the EPR Paradox
- Quantum technologies with hybrid systems
- One-sided Device-Independent Quantum Key Distribution: Security, feasibility, and the connection with steering
- Measuring measurement
- Remote creation of hybrid entanglement between particle-like and wave-like optical qubits
- Entangling quantum and classical states of light
- High performance fiber-coupled NbTiN superconducting nanowire single photon detectors with Gifford-McMahon cryocooler
- Maximum-likelihood estimation of quantum measurement
- Discrimination of the binary coherent signal: Gaussian-operation limit and simple non-Gaussian near-optimal receivers
- Remote preparation of a single-mode photonic qubit by measuring field quadrature noise
- A Near-Infrared 64-pixel Superconducting Nanowire Single Photon Detector Array with Integrated Multiplexed Readout
- Quantum-scissors device for optical state truncation: A proposal for practical realization
- Low-Filling-Factor Superconducting Single Photon Detector with High System Detection Efficiency
- Mapping coherence in measurement via full quantum tomography of a hybrid optical detector
- A scheme for quantum teleportation between discrete and continuous encodings of an optical qubit
- Extreme nonlocality with one photon
- Quantum characterization of superconducting photon counters
- Displacement receiver for phase-shift-keyed coherent states
- Quantum receivers with squeezing and photon-number-resolving detectors
- Non-deterministic Gates for Photonic Single Rail Quantum Logic
- Implementation of projective measurements with linear optics and continuous photon counting
- Binary projective measurement via linear optics and photon counting
- Adaptive Phase Measurements in Linear Optical Quantum Computation
- Feasibility of loophole-free nonlocality tests with a single photon
- Suppressing the Errors due to Mode Mismatch for M-ary PSK Quantum Receivers by Photon-Number-Resolving Detector
- Projective measurement onto arbitrary superposition of coherent state bases
- Tomography of a displacement photon counter for discrimination of single-rail optical qubits
- Deterministic preparation of superpositions of vacuum plus one photon by adaptive homodyne detection: experimental considerations
- Algebraic and algorithmic frameworks for optimized quantum measurements
Cited by in corpus (13)
- Entanglement-Based Quantum Information Technology
- Experimental demonstration of a quantum receiver beating the standard quantum limit at the telecom wavelength
- Adaptive generalized measurement for unambiguous state discrimination of quaternary phase-shift-keying coherent states
- Linear optics and photodetection achieve near-optimal unambiguous coherent state discrimination
- Quantum receiver for phase-shift keying at the single photon level
- Quantum Receiver Enhanced by Adaptive Learning
- Direct experimental certification of quantum non-Gaussian character and Wigner function negativity of single-photon detectors
- Compressively certifying quantum measurements
- Modern compressive tomography for quantum information science
- Experimental observation of anomalous supralinear response of single-photon detectors
- Demonstration of optimal non-projective measurement of binary coherent states with photon counting
- High-efficiency microwave photodetection by cavity coupled double dots with single cavity-photon sensitivity
- Fundamental limits on determination of photon number statistics from measurements with multiplexed on/off detectors