Indirect Measurement for Optimal Quantum Communication Enhanced by Binary Non-standard Coherent States
arXiv:2112.02312 · doi:10.1364/JOSAB.450647
Abstract
It is well known that the Helstrom bound can be improved by generalizing the form of a coherent state. Thus, designing a quantum measurement achieving the improved Helstrom bound is important for novel quantum communication. In the present article, we analytically show that the improved Helstrom bound can be achieved by a projective measurement composed of orthogonal non-standard Schrödinger cat states. Moreover, we numerically show that the improved Helstrom bound can be nearly achieved by an indirect measurement based on the Jaynes-Cummings model. As the Jaynes-Cummings model describes an interaction between a light and a two-level atom, we emphasize that the indirect measurement considered in this article has potential to be experimentally implemented.
arXiv comment11 pages, 3 Figures
References in corpus (21)
- Quantum state discrimination and its applications
- Discrimination of the binary coherent signal: Gaussian-operation limit and simple non-Gaussian near-optimal receivers
- Optimal discrimination of mixed quantum states involving inconclusive results
- Displacement receiver for phase-shift-keyed coherent states
- Sub-shot-noise-limit discrimination of on-off keyed coherent signals via a quantum receiver with a superconducting transition edge sensor
- Optimized communication strategies with binary coherent states over phase noise channels
- Optimal state discrimination with a fixed rate of inconclusive results: Analytical solutions and relation to state discrimination with a fixed error rate
- Optimal receiver for quantum cryptography with two coherent states
- Complete analysis for three-qubit mixed-state discrimination
- Ultrastrong Jaynes-Cummings Model
- Achieving minimum-error discrimination of an arbitrary set of laser-light pulses
- Quantum receiver for large alphabet communication
- Projective measurement onto arbitrary superposition of coherent state bases
- Quantum stochastic approach to the description of quantum measurements
- Near optimal discrimination of binary coherent signals via atom-light interaction
- Quantum amplification and purification of noisy coherent states
- The Helstrom measurement: A nondestructive implementation
- Optimal discrimination of optical coherent states cannot always be realized by interfering with coherent light, photon counting, and feedback
- Generalized Susskind-Glogower coherent states
- Tomography of a displacement photon counter for discrimination of single-rail optical qubits
- Two-sequential Conclusive Discrimination between Binary Coherent States via Indirect Measurements