Precision measurements with photon-subtracted or photon-added Gaussian states

Braun, Daniel; Jian, Pu; Pinel, Olivier; Treps, Nicolas

doi:10.1103/physreva.90.013821

Cited by 62 publications

(35 citation statements)

References 43 publications

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“…This would open the door for realization of high-fidelity number-resolved photo-detection [15]. In contrast, the ability to tune p Ryd should be beneficial for high-fidelity preparation of non-classical light states for quantum information [1,2,5,11,27] and metrology [6,10].…”

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confidence: 99%

“…We investigate the change of the pulse shape and temporal photon statistics of the transmitted light pulses for different input photon numbers and compare the results to simulations. Based on the experimental results, we discuss the applicability of our single-photon absorber for number resolved photon detection schemes or quantum gate operations.The elementary operation of subtracting exactly one photon from an arbitrary light pulse is of great interest for testing fundamental concepts of quantum optics [1,2] as well as for the preparation of non-classical states of light for quantum information [3][4][5][6], simulation [7][8][9], and metrology protocols [10]. Heralded single-photon subtraction has been realized by monitoring the weak reflection of a highly imbalanced beam splitter, where a single detection event corresponds to subtraction of a photon from the transmitted pulse [1,11].…”

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Single-Photon Absorber Based on Strongly Interacting Rydberg Atoms

et al. 2016

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We report on the realization of a free-space single-photon absorber, which deterministically absorbs exactly one photon from an input pulse. Our scheme is based on the saturation of an optically thick medium by a single photon due to Rydberg blockade. By converting one absorbed input photon into a stationary Rydberg excitation, decoupled from the light fields through fast engineered dephasing, we blockade the full atomic cloud and change our optical medium from opaque to transparent. We show that this results in the subtraction of one photon from the input pulse over a wide range of input photon numbers. We investigate the change of the pulse shape and temporal photon statistics of the transmitted light pulses for different input photon numbers and compare the results to simulations. Based on the experimental results, we discuss the applicability of our single-photon absorber for number resolved photon detection schemes or quantum gate operations.The elementary operation of subtracting exactly one photon from an arbitrary light pulse is of great interest for testing fundamental concepts of quantum optics [1,2] as well as for the preparation of non-classical states of light for quantum information [3][4][5][6], simulation [7][8][9], and metrology protocols [10]. Heralded single-photon subtraction has been realized by monitoring the weak reflection of a highly imbalanced beam splitter, where a single detection event corresponds to subtraction of a photon from the transmitted pulse [1,11]. For sufficiently low reflectivity such that the subtraction of two or more photons becomes negligible, this procedure implements the photon annihilation operatorα [1]. This operation is inherently probabilistic, with the success rate depending on the number of incoming photons. In contrast, deterministic single-photon subtraction, where always exactly one photon is removed independent of the input photon state, can be implemented by sending the light through a medium saturable by a single absorption event. One realization of such a single-photon absorber is a single 3-level quantum emitter strongly coupled to an optical resonator [12,13], as recently demonstrated by Rosenblum et al. using a single atom coupled to a microsphere resonator [14].Here we demonstrate the experimental realiziation of a deterministic free-space single-photon absorber [15], which is based on the saturation of an optically thick free-space medium by a single photon due to Rydberg blockade [16]. Single-photon subtraction adds a new component to the growing Rydberg quantum optics toolbox [17][18][19][20], which already contains photonic logic building-blocks such as single-photon sources [21], switches [22], transistors [23][24][25], and conditional π-phase shifts [26]. Our approach is scalable to multiple cascaded absorbers, essential for preparation of non-classical light states for quantum information and metrology applications [5,11,27], and, in combination with the singlephoton transistor, high-fidelity number-resolved photon detection [15,28,29].Any pr...

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Single-Photon Absorber Based on Strongly Interacting Rydberg Atoms

et al. 2016

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“…In this Section we will introduce the probe states that we shall consider throughout this paper, namely, photon-subtracted states. Different approaches can be followed to describe the generation of these states and obtain their Wigner function [32,[39][40][41].…”

Section: Mode-selective Photon Subtractionmentioning

confidence: 99%

Homodyne detection of non-Gaussian quantum steering

Lopetegui¹,

Gessner²,

Fadel³

et al. 2022

Preprint

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Quantum correlations are at the core of current developments in quantum technologies. Certification protocols of entanglement and steering, suitable for continuous-variable non-Gaussian states are scarce and generally highly demanding from an experimental point of view. We propose a protocol based on Fisher information for witnessing steering in general continuous-variable bipartite states, through homodyne detection. It proves to be relevant for the detection of non-Gaussian steering in scenarios where witnesses based on Gaussian features like the covariance matrix are shown to fail.

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“…It is straightforward to use these to calculate the factorial moments from the moment generating functions using (11). For the positive moments we find the familiar form [35,49] n (m) |α = |α| 2m .…”

Section: Moment Generating Functionsmentioning

confidence: 99%

Statistics of photon-subtracted and photon-added states

et al. 2018

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The subtraction or addition of a prescribed number of photons to a field mode does not, in general, simply shift the probability distribution by the number of subtracted or added photons. Subtraction of a photon from an initial coherent state, for example, leaves the photon statistics unchanged and the same process applied to an initial thermal state increases the mean photon number. We present a detailed analysis of the effects of the initial photon statistics on those of the state from which the photons have been subtracted or to which they have been added. Our approach is based on two closely-related moment generating functions, one well-established and one that we introduce.

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Precision measurements with photon-subtracted or photon-added Gaussian states

Cited by 62 publications

References 43 publications

Single-Photon Absorber Based on Strongly Interacting Rydberg Atoms

Single-Photon Absorber Based on Strongly Interacting Rydberg Atoms

Homodyne detection of non-Gaussian quantum steering

Statistics of photon-subtracted and photon-added states

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