Advances in photonic quantum sensing

  title={Advances in photonic quantum sensing},
  author={Stefano Pirandola and Bhaskar Roy Bardhan and Tobias Gehring and Christian Weedbrook and Seth Lloyd},
  journal={Nature Photonics},
Quantum sensing has become a broad field. It is generally related with the idea of using quantum resources to boost the performance of a number of practical tasks, including the radar-like detection of faint objects, the readout of information from optical memories, and the optical resolution of extremely close point-like sources. Here, we first focus on the basic tools behind quantum sensing, discussing the most recent and general formulations for the problems of quantum parameter estimation… 
Photonic quantum metrology
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Experimental investigation of linear-optics-based quantum target detection
The development of new techniques to improve measurements is crucial for all sciences. By employing quantum systems as sensors to probe some physical property of interest allows the application of
Quantum Imaging and Information.
The fundamental parameters that describe the spatial wavefunction of the photon are described and their importance for applications in quantum information processing are established.
Integrated Microwave Quantum Sensing for Radar Type Problems Decisions
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Quantum-enhanced radiometry via approximate quantum error correction
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Quantum Antennas
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Femtosecond laser micromachining for integrated quantum photonics
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Microwave quantum illumination via cavity magnonics
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Microwave quantum illumination with a digital phase-conjugated receiver
Quantum illumination is a sensing technique that employs entangled signal-idler beams to improve the detection efficiency of low-reflectivity objects in environments with large thermal noise. The
Quantum illumination via quantum-enhanced sensing
Quantum-enhanced sensing has a goal of enhancing a parameter sensitivity with input quantum states, while quantum illumination has a goal of enhancing a target detection capability with input


Quantum sensing
“Quantum sensing” describes the use of a quantum system, quantum properties or quantum phenomena to perform a measurement of a physical quantity. Historical examples of quantum sensors include
Photon-number correlation for quantum enhanced imaging and sensing
In this review we present the potentialities and the achievements of the use of non-classical photon number correlations in many applications ranging from imaging to metrology. Photon number
Microwave quantum illumination.
The error probability of this microwave quantum-illumination system, or quantum radar, is shown to be superior to that of any classical microwave radar of equal transmitted energy.
Ultimate Precision Bound of Quantum and Subwavelength Imaging.
The ultimate precision bound for resolving two pointlike sources in an arbitrary quantum state is established, with a simple formula for the specific case of two thermal sources, finding that quantum-correlated sources can be superresolved at the sub-Rayleigh scale.
Quantum Estimation Methods for Quantum Illumination.
This approach employs the quantum Fisher information to provide an upper bound for the error probability, supplies the concrete estimator saturating the bound, and extends the quantum illumination protocol to non-Gaussian states and shows how Schrödinger's cat states may be used for quantum illumination.
Quantifying the source of enhancement in experimental continuous variable quantum illumination
A quantum illumination protocol exploits correlated light beams to enhance the probability of detection of a partially reflecting object lying in a very noisy background. Recently a simple
Gaussian-state quantum-illumination receivers for target detection
These are designs of quantum-optical sensors for target detection that appreciably outperform the best classical sensor in the low-signal-brightness, high-loss, and high-noise operating regime.
Demonstrating an absolute quantum advantage in direct absorption measurement
This work experimentally demonstrates an instance of an absolute advantage per photon probe that is exposed to the absorbative sample for optical direct absorption measurement, and enables improvement in the precision of measurement, per photon Probe, beyond what is achievable with an ideal coherent state.
Gaussian quantum information
This review focuses on continuous-variable quantum information processes that rely on any combination of Gaussian states, Gaussian operations, and Gaussian measurements, including quantum communication, quantum cryptography, quantum computation, quantum teleportation, and quantum state and channel discrimination.
The ultimate precision of quantum illumination
Quantum illumination is a technique for detecting the presence of a target in a noisy environment by means of a quantum probe. We prove that the two-mode squeezed vacuum state is the optimal probe