Noise spectra in balanced optical detectors based on transimpedance amplifiers

Masalov, A. V.; Kuzhamuratov, A.; Lvovsky, A. I.

doi:10.1063/1.5004561

Cited by 35 publications

(16 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To reconstruct the teleported states in Bob's channel, we employed a balanced homodyne detector (BHD) [17,23]. A total of 2000 quadratures -along with their associated phaseswere acquired for each teleported state.…”

Section: Resultsmentioning

confidence: 99%

Entangled resource for interfacing single- and dual-rail optical qubits

Drahi

Sychev

Pirov

et al. 2021

Quantum

Self Cite

View full text Add to dashboard Cite

Today's most widely used method of encoding quantum information in optical qubits is the dual-rail basis, often carried out through the polarisation of a single photon. On the other hand, many stationary carriers of quantum information – such as atoms – couple to light via the single-rail encoding in which the qubit is encoded in the number of photons. As such, interconversion between the two encodings is paramount in order to achieve cohesive quantum networks. In this paper, we demonstrate this by generating an entangled resource between the two encodings and using it to teleport a dual-rail qubit onto its single-rail counterpart. This work completes the set of tools necessary for the interconversion between the three primary encodings of the qubit in the optical field: single-rail, dual-rail and continuous-variable.

show abstract

Section: Resultsmentioning

confidence: 99%

Entangled resource for interfacing single- and dual-rail optical qubits

Drahi

Sychev

Pirov

et al. 2021

Quantum

Self Cite

View full text Add to dashboard Cite

show abstract

“…The total quantum efficiency of homodyne detection, 55%, is determined from the analysis of the negative cat state generated in mode C conditioned on a photon detection in VA. The main efficiency reduction factors are optical losses (90% cumulative transmissivity of all optical elements, in addition to the tapping beamsplitter which also has a 1 − r = 90% transmissivity), mode matching between the signal and local oscillator (81%) and the quantum efficiency of the homodyne detector (86%) 47 , 48 .…”

Section: Methodsmentioning

confidence: 99%

Entanglement and teleportation between polarization and wave-like encodings of an optical qubit

et al. 2018

Self Cite

View full text Add to dashboard Cite

Light is an irreplaceable means of communication among various quantum information processing and storage devices. Due to their different physical nature, some of these devices couple more strongly to discrete, and some to continuous degrees of freedom of a quantum optical wave. It is therefore desirable to develop a technological capability to interconvert quantum information encoded in these degrees of freedom. Here we generate and characterize an entangled state between a dual-rail (polarization-encoded) single-photon qubit and a qubit encoded as a superposition of opposite-amplitude coherent states. We furthermore demonstrate the application of this state as a resource for the interfacing of quantum information between these encodings. In particular, we show teleportation of a polarization qubit onto a freely propagating continuous-variable qubit.

show abstract

“…For an ideal TIA, the Fourier transform of the unit impulse response is given analytically by a second-order Butterworth function [32]:…”

Section: Detector Characterisationmentioning

confidence: 99%

Shot-Noise Limited Homodyne Detection for MHz Quantum Light Characterisation in the 2 μm Band

Biele,

Tasker,

Silverstone

et al. 2021

Preprint

View full text Add to dashboard Cite

Characterising quantum states of light in the 2 µm band requires high-performance shot-noise limited detectors. Here, we present the characterisation of a homodyne detector that we use to observe vacuum shot-noise via homodyne measurement with a 2.07 µm pulsed mode-locked laser. The device is designed primarily for pulsed illumination. It has a 3 dB bandwidth of 13.2 MHz, total conversion efficiency of 58% at 2.07 µm and a common-mode rejection ratio of 48 dB at 39.5 MHz. The detector begins to saturate at 1.8 mW with 9 dB of shot-noise clearance at 5 MHz. This demonstration enables the characterisation of megahertz-quantum optical behaviour in the 2 µm band.

show abstract

Noise spectra in balanced optical detectors based on transimpedance amplifiers

Cited by 35 publications

References 15 publications

Entangled resource for interfacing single- and dual-rail optical qubits

Entangled resource for interfacing single- and dual-rail optical qubits

Entanglement and teleportation between polarization and wave-like encodings of an optical qubit

Shot-Noise Limited Homodyne Detection for MHz Quantum Light Characterisation in the 2 μm Band

Contact Info

Product

Resources

About