Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:quant-ph/0209020 · Physical Review A

Soliton backaction-evading measurement using spectral filtering

Friedrich König, B. C. Buchler, T. Rechtenwald, Gerd Leuchs, Andreas Sizmann

Published Oct 23, 2002• 23 citations
arXivHTMLPDF

Abstract

We report on a backaction-evading (BAE) measurement of the photon number of fiber-optical solitons operating in the quantum regime. We employ a recently proposed different detection scheme based on spectral filtering of colliding optical solitons. The measurements of the BAE criteria demonstrate significant quantum state preparation and transfer of the input signal to the signal and probe outputs exiting the apparatus, displaying the quantum-nondemolition behavior of the experiment.

DOI
10.1103/physreva.66.043810

Related papers

Backaction evading measurements for quantum nondemolition detection and quantum optical tapping

Silvania F. Pereira, Z. Y. Ou, Harry J. Kimble

Backaction evading (BAE) measurements are described for optical parametric amplification with polarization mixing. Quantum correlations between the ``signal'' and ``meter'' outputs from the BAE device lead to an observed photocurrent variance 30% (1.5 dB) below the signal shot-noise level and to an inferred variance 44% below the vacuum-state level for determination of the signal field given the meter reading. Together with its efficient information transfer, this BAE detector functions as a quantum optical tap and is suitable for implementing quantum nondemolition detection.

Physical Review Letters•Jan 10, 1994•111 citations

Quantum-nondemolition measurement of the photon number of an optical soliton

Stephen R. Friberg, Susumu Machida, Y. Yamamoto

We report the quantum-nondemolition measurement of the photon number of an optical soliton. Taking advantage of the conservation properties of quantum solitons, we were able to read out the photon number of a ``signal'' soliton via the phase of a ``probe'' soliton after a soliton collision in a single-mode low-loss optical fiber. Subsequent noise measurements showed the photon number fluctuations of the signal soliton at the shot-noise limit to be correlated to the phase fluctuations of the probe soliton, signifying a backaction-evading measurement of the photon number.

Physical Review Letters•Nov 30, 1992•126 citations

Quantum Nondemolition Measurement of the Photon Number of an Optical Soliton

Stephen R. Friberg, S. Machida, Y. Yamamoto

We report the quantum-nondemolition measurement of the photon number of an optical soliton. Taking advantage of the conservation properties of quantum solitons, we were able to read out the photon number of a ``signal'' soliton via the phase of a ``probe'' soliton after a soliton collision in a single-mode low-loss optical fiber. Subsequent noise measurements showed the photon number fluctuations of the signal soliton at the shot-noise limit to be correlated to the phase fluctuations of the probe soliton, signifying a backaction-evading measurement of the photon number.

Quantum Electronics and Laser Science Conference•May 10, 1992•13 citations

Quantum-nondemolition measurement using spectral correlations between fiber-optical pulses

Friedrich König, T. Rechtenwald, M. Zielonka +3 more

Summary form only given. The collision of optical pulses in a fiber is a promising concept for quantum-nondemolition (QND) measurements of the photon-number using the Kerr effect induced cross-phase modulation (XPM). Spectral filtering of solitons produced strong photon-number noise reduction below shot noise in direct detection. We present a novel QND experiment based on the XPM-induced frequency shift of colliding pulses and on direct detection using spectral filtering.

Quantum Electronics and Laser Science Conference•May 12, 2000•0 citations

Two-stage quantum nondemolition experiment

Richard E. Slusher, Arthur La Porta, Seng‐Tiong Ho +1 more

We have previously demonstrated a backaction evading (BAE) measurement apparatus based on simple optics and a parametric downconversion amplifier.1 This apparatus avoids contamination of the measured signal by the measurement process. Quantum correlations were demonstrated between the measured portion of the signal and the transmitted signal, while the mean level of the transmitted signal is equal to that of the input.

•May 21, 1990•0 citations

Backaction Cancellation in Quantum Nondemolition Measurement of Optical Solitons

Andrey B. Matsko, V. V. Kozlov, Marlan O. Scully

We present a new scheme for quantum nondemolition measurement, where the backaction noise due to self-phase modulation in an optical fiber is canceled by passing a probe soliton through a near-resonant two-level system with negative ${\ensuremath{\chi}}^{(3)}$ nonlinearity.

Physical Review Letters•Apr 19, 1999•18 citations
We report on a backaction-evading (BAE) measurement of the photon number of fiber-optical solitons operating in the quantum regime. We employ a recently proposed different detection scheme based on spectral filtering of colliding optical solitons. The measurements of the BAE criteria demonstrate significant quantum state preparation and transfer of the input signal to the signal and probe outputs exiting the apparatus, displaying the quantum-nondemolition behavior of the experiment.
Backaction evading (BAE) measurements are described for optical parametric amplification with polarization mixing. Quantum correlations between the ``signal'' and ``meter'' outputs from the BAE device lead to an observed photocurrent variance 30% (1.5 dB) below the signal shot-noise level and to an inferred variance 44% below the vacuum-state level for determination of the signal field given the meter reading. Together with its efficient information transfer, this BAE detector functions as a quantum optical tap and is suitable for implementing quantum nondemolition detection.
We report the quantum-nondemolition measurement of the photon number of an optical soliton. Taking advantage of the conservation properties of quantum solitons, we were able to read out the photon number of a ``signal'' soliton via the phase of a ``probe'' soliton after a soliton collision in a single-mode low-loss optical fiber. Subsequent noise measurements showed the photon number fluctuations of the signal soliton at the shot-noise limit to be correlated to the phase fluctuations of the probe soliton, signifying a backaction-evading measurement of the photon number.
We report the quantum-nondemolition measurement of the photon number of an optical soliton. Taking advantage of the conservation properties of quantum solitons, we were able to read out the photon number of a ``signal'' soliton via the phase of a ``probe'' soliton after a soliton collision in a single-mode low-loss optical fiber. Subsequent noise measurements showed the photon number fluctuations of the signal soliton at the shot-noise limit to be correlated to the phase fluctuations of the probe soliton, signifying a backaction-evading measurement of the photon number.