Quantum-Limited Squeezed Light Detection with a Camera

Matekole, Elisha S.; Cuozzo, Savannah L.; Prajapati, Nikunjkumar; Bhusal, Narayan; Lee, Hwang; Novikova, Irina; Михайлов, Е. Е.; Dowling, Jonathan P.; Cohen, Lior

doi:10.1103/physrevlett.125.113602

Cited by 12 publications

(8 citation statements)

References 35 publications

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“…Noise statistics of the transmitted field is analysed with a homodyne-like scheme. This is achieved by letting the transmitted field interfere with a strong local oscillator (LO) on a balanced beam splitter and consequent detection by a CCD camera [19]. Intensity maps of two output beams, recorded at multiple time instants by the camera, are subtracted to get a series of "beam difference" maps as shown in Fig.…”

Section: Theoretical Modelmentioning

confidence: 99%

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Weak Thermal State Quadrature-Noise Shadow Imaging

Barge¹,

Niu²,

Cuozzo³

et al. 2022

Preprint

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In this work, we theoretically and experimentally demonstrate the possibility to create an image of an opaque object using a few-photon thermal optical field. We utilize the Quadrature-Noise Shadow Imaging (QSI) technique that detects the changes in the quadrature-noise statistics of the probe beam after its interaction with an object. We show that such thermal QSI scheme has an advantage over the classical differential imaging when the effect of dark counts is considered. At the same time, the easy availability of thermal sources for any wavelength makes the method practical for broad range of applications, not accessible with, e.g. quantum squeezed light. As a proof of principle, we implement this scheme by two distinct methods: first, with pseudo-thermal light generated by rotating ground glass (RGG) method and second, with thermal beam generated by Four-Wave Mixing (FWM) method. The RGG method shows simplicity and robustness of QSI scheme while the FWM method validates theoretical signal-to-noise ratio predictions. Finally, we demonstrate low-light imaging abilities with QSI by imaging a biological specimen on a CCD camera, detecting just 0.006 photons per pixel on average.

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Section: Theoretical Modelmentioning

confidence: 99%

“…x [19,20]. Defining N1,2 ( x) as the number operator for mode 1 or 2, correspondingly at the output ports, we can write moments of the photon-number difference op- erator N ( x) = N1 ( x) − N2 ( x) as:…”

Section: Theoretical Modelmentioning

confidence: 99%

Weak Thermal State Quadrature-Noise Shadow Imaging

Barge¹,

Niu²,

Cuozzo³

et al. 2022

Preprint

Self Cite

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“…Other options are direct intensity detection or photon counting (for intensity-squeezed light only), or with a phase-shifting cavity (Vogel & Welsch 2006). Recently, a simpler method using a standard CCD cameras was described, based on the first two moments of the recorded pixel-to-pixel photon fluctuation statistics (Matekole et al 2020). Simplified, starlight is expected to produce a linear intensity-variance correlation, assuming that the (CCD) detector is linear in its response.…”

Section: Squeezed Lightmentioning

confidence: 99%

“…Squeezed light can be found with a CCD by measuring the first two moments of the recorded pixel-to-pixel photon fluctuation statistics (Matekole et al 2020). A test for Fock states can be made by creating photon number statistic, i.e., creating a histogram of counted photons within this time (Breitenbach et al 1997).…”

Section: Conclusion and Next Stepsmentioning

confidence: 99%

Searching for interstellar quantum communications

Hippke

2021

Preprint

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The modern search for extraterrestrial intelligence (SETI) began with the seminal publications of Cocconi & Morrison (1959) and Schwartz & Townes (1961), who proposed to search for narrow-band signals in the radio spectrum, and for optical laser pulses. Over the last six decades, more than one hundred dedicated search programs have targeted these wavelengths; all with null results. All of these campaigns searched for classical communications, that is, for a significant number of photons above a noise threshold; with the assumption of a pattern encoded in time and/or frequency space. I argue that future searches should also target quantum communications. They are preferred over classical communications with regards to security and information efficiency, and they would have escaped detection in all previous searches. The measurement of Fock state photons or squeezed light would indicate the artificiality of a signal. I show that quantum coherence is feasible over interstellar distances, and explain for the first time how astronomers can search for quantum transmissions sent by ETI to Earth, using commercially available telescopes and receiver equipment.

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“…Our previous study has suggested that ponderomotive (optomechanical) entanglement is highly dependent on input quantum noise [10]. Conveniently, squeezed light-a non-classical state of light widely used in quantum optical applications-has suppressed/enhanced quadrature noise that can be tailored based on the squeezing strength and squeezing angle [11][12][13]. In order to further investigate the relationship between quantum noise and the strength of pondermotive entanglement, we inject such a light field, squeezed coherent light.…”

Section: Introductionmentioning

confidence: 99%

Single-mode input squeezing and tripartite entanglement in three-mode ponderomotive optomechanics simulations

Dixon¹,

Cohen²,

Bhusal³

et al. 2021

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Quantum entanglement is a crucial resource for a wide variety of quantum technologies. However, the current state-of-art methods to generate quantum entanglement in optomechanical systems are not as efficient as all-optical methods utilizing nonlinear crystals. This article proposes a new scheme in which two single-mode squeezed light fields are injected into an optomechanical cavity. We demonstrate through our numerical simulations that the quantum entanglement can be substantially enhanced with the careful selection of squeezing strength and squeezing angle of the two quadrature squeezed light fields. Our results represent a significant improvement in output bipartite photon-photon entanglement over the previously demonstrated schemes using two coherent light fields as inputs. These simulations predict a maximum increase in Gaussian entanglement by a factor of about 6, as well as increases in the quantum noise and non-Gaussianity of the output light. This non-Gaussianity is attributed to tripartite entanglement between the two optical fields and the optomechanical oscillator (OMO). At particular squeezing angles, the Gaussianity can be increased, thus introducing a method of optically controlling the intracavity entanglement. These mechanics can benefit various optical quantum technologies utilizing optomechanical entanglement and continuous variable quantum optics.

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Quantum-Limited Squeezed Light Detection with a Camera

Cited by 12 publications

References 35 publications

Weak Thermal State Quadrature-Noise Shadow Imaging

Weak Thermal State Quadrature-Noise Shadow Imaging

Searching for interstellar quantum communications

Single-mode input squeezing and tripartite entanglement in three-mode ponderomotive optomechanics simulations

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