Related papers: Experimental quantum reading with photon counting

Experimental quantum reading with photon counting

URL: http://arxiv.org/abs/2004.10211v1
Date: Tue, 21 Apr 2020 18:00:01 GMT
Title: Experimental quantum reading with photon counting
Authors: Giuseppe Ortolano, Elena Losero, Ivano Ruo Berchera, Stefano Pirandola, Marco Genovese
Abstract summary: We show that quantum advantage is obtained by practical photon-counting measurements combined with a simple maximum-likelihood decision. Our experimental findings demonstrate that quantum entanglement and simple optics are able to enhance the readout of digital data.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The final goal of quantum hypothesis testing is to achieve quantum advantage over all possible classical strategies. In the protocol of quantum reading this advantage is achieved for information retrieval from an optical memory, whose generic cell stores a bit of information in two possible lossy channels. For this protocol, we show, theoretically and experimentally, that quantum advantage is obtained by practical photon-counting measurements combined with a simple maximum-likelihood decision. In particular, we show that this receiver combined with an entangled two-mode squeezed vacuum source is able to outperform any strategy based on statistical mixtures of coherent states for the same mean number of input photons. Our experimental findings demonstrate that quantum entanglement and simple optics are able to enhance the readout of digital data, paving the way to real applications of quantum reading and with potential applications for any other model that is based on the binary discrimination of bosonic loss.

Related papers

Universal quantum frequency comb measurements by spectral mode-matching [39.58317527488534]
We present the first general approach to make arbitrary, one-shot measurements of a multimode quantum optical source. This approach uses spectral mode-matching, which can be understood as interferometry with a memory effect.
arXiv Detail & Related papers (2024-05-28T15:17:21Z)
Power Characterization of Noisy Quantum Kernels [52.47151453259434]
We show that noise may make quantum kernel methods to only have poor prediction capability, even when the generalization error is small. We provide a crucial warning to employ noisy quantum kernel methods for quantum computation.
arXiv Detail & Related papers (2024-01-31T01:02:16Z)
Simulating Gaussian boson sampling quantum computers [68.8204255655161]
We briefly review recent theoretical methods to simulate experimental Gaussian boson sampling networks. We focus mostly on methods that use phase-space representations of quantum mechanics. A brief overview of the theory of GBS, recent experiments and other types of methods are also presented.
arXiv Detail & Related papers (2023-08-02T02:03:31Z)
A general-purpose single-photon-based quantum computing platform [36.56899230501635]
We report a first user-ready general-purpose quantum computing prototype based on single photons. The device comprises a high-efficiency quantum-dot single-photon source feeding a universal linear optical network on a reconfigurable chip. We report on a first heralded 3-photon entanglement generation, a key milestone toward measurement-based quantum computing.
arXiv Detail & Related papers (2023-06-01T16:35:55Z)
Quantum Kernel Evaluation via Hong-Ou-Mandel Interference [11.270300525597227]
We propose and simulate a protocol capable of evaluating quantum kernels using Hong-Ou-Mandel (HOM) interference. As a result, interfering two photons and using the detected coincidence counts, we can perform a direct measurement and binary classification. This physical platform confers an exponential quantum advantage also described theoretically in other works.
arXiv Detail & Related papers (2022-12-22T23:55:23Z)
Experimental Multi-state Quantum Discrimination in the Frequency Domain with Quantum Dot Light [40.96261204117952]
In this work, we present the experimental realization of a protocol employing a time-multiplexing strategy to optimally discriminate among eight non-orthogonal states. The experiment was built on a custom-designed bulk optics analyser setup and single photons generated by a nearly deterministic solid-state source. Our work paves the way for more complex applications and delivers a novel approach towards high-dimensional quantum encoding and decoding operations.
arXiv Detail & Related papers (2022-09-17T12:59:09Z)
Demonstration of a bosonic quantum classifier with data re-uploading [0.1616312990391151]
In a single qubit system, a universal quantum classifier can be realised using the data-reuploading technique. We propose a new quantum classifier applying this technique to bosonic systems and successfully demonstrated it using silicon optical integrated quantum circuits.
arXiv Detail & Related papers (2022-07-14T02:05:55Z)
Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems. Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
arXiv Detail & Related papers (2022-06-03T14:52:34Z)
Quantum reading: the experimental set-up [0.0]
We show that a transmitter based on two-mode squeezed vacuum (TMSV) states is combined with a photon counting receiver, and we experimentally confirm it.
arXiv Detail & Related papers (2021-02-18T15:42:28Z)
Scalable multiphoton quantum metrology with neither pre- nor post-selected measurements [0.0]
We experimentally demonstrate a scalable protocol for quantum-enhanced optical phase estimation. The robustness of two-mode squeezed vacuum states against loss allows us to outperform schemes based on N00N states. Our work is important for quantum technologies that rely on multiphoton interference.
arXiv Detail & Related papers (2020-11-04T18:11:33Z)

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