dorsal/arxiv
View SchemaQuantum Optical Integrated Sensing and Communication with Homodyne BPSK Detection
| Authors | Ioannis Krikidis |
|---|---|
| Categories | |
| ArXiv ID | 2601.07034vv1 |
| URL | https://arxiv.org/abs/2601.07034 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
In this letter, we propose a quantum integrated sensing and communication scheme for a quantum optical link using binary phase-shift keying modulation and homodyne detection. The link operates over a phase-insensitive Gaussian channel with an unknown deterministic phase rotation, where the homodyne receiver jointly carries out symbol detection and phase estimation. We formulate a design problem that minimizes the bit-error rate subject to a Fisher information-based constraint on estimation accuracy. To solve it, we develop an iterative algorithm composed of an inner expectation-maximization loop for joint detection and estimation and an outer loop that adaptively retunes the local oscillator phase. Numerical results confirm the effectiveness of the proposed approach and demonstrate a fundamental trade-off between communication reliability and sensing accuracy.
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"date_created": "2026-02-17T05:53:08.893000Z",
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"abstract": "In this letter, we propose a quantum integrated sensing and communication scheme for a quantum optical link using binary phase-shift keying modulation and homodyne detection. The link operates over a phase-insensitive Gaussian channel with an unknown deterministic phase rotation, where the homodyne receiver jointly carries out symbol detection and phase estimation. We formulate a design problem that minimizes the bit-error rate subject to a Fisher information-based constraint on estimation accuracy. To solve it, we develop an iterative algorithm composed of an inner expectation-maximization loop for joint detection and estimation and an outer loop that adaptively retunes the local oscillator phase. Numerical results confirm the effectiveness of the proposed approach and demonstrate a fundamental trade-off between communication reliability and sensing accuracy.",
"arxiv_id": "2601.07034",
"authors": [
"Ioannis Krikidis"
],
"categories": [
"cs.IT",
"math.IT"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Quantum Optical Integrated Sensing and Communication with Homodyne BPSK Detection",
"url": "https://arxiv.org/abs/2601.07034",
"version": "v1"
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