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Title: Enhanced cooperativity for quantum-nondemolition-measurement–induced spin squeezing of atoms coupled to a nanophotonic waveguide

Abstract

We study the enhancement of cooperativity in the atom-light interface near a nanophotonic waveguide for application to QND measurement of atomic spins. Here the cooperativity per atom is determined by the ratio between the measurement strength and the decoherence rate. Counterintuitively, we find that by placing the atoms at an azimuthal position where the guided probe mode has the lowest intensity, we increase the cooperativity. This arises because the QND measurement strength depends on the interference between the probe and scattered light guided into an orthogonal polarization mode, while the decoherence rate depends on the local intensity of the probe. Thus, by proper choice of geometry, the ratio of good to bad scattering can be strongly enhanced for highly anisotropic modes. We apply this to study spin squeezing resulting from QND measurement of spin projection noise via the Faraday effect in two nanophotonic geometries, a cylindrical nano fiber and a square waveguide. We nd, with about 2500 atoms using realistic experimental parameters, ~ 6:3 dB and ~ 13 dB of squeezing can be achieved on the nano fiber and square waveguide, respectively.

Authors:
 [1];  [2];  [1]
  1. Univ. of New Mexico, Albuquerque, NM (United States)
  2. Univ. of New Mexico, Albuquerque, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1429712
Alternate Identifier(s):
OSTI ID: 1426514
Report Number(s):
SAND-2017-13445J
Journal ID: ISSN 2469-9926; PLRAAN; 659475; TRN: US1802481
Grant/Contract Number:  
AC04-94AL85000; NA0003525
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 97; Journal Issue: 3; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Qi, Xiaodong, Jau, Yuan-Yu, and Deutsch, Ivan H. Enhanced cooperativity for quantum-nondemolition-measurement–induced spin squeezing of atoms coupled to a nanophotonic waveguide. United States: N. p., 2018. Web. doi:10.1103/PhysRevA.97.033829.
Qi, Xiaodong, Jau, Yuan-Yu, & Deutsch, Ivan H. Enhanced cooperativity for quantum-nondemolition-measurement–induced spin squeezing of atoms coupled to a nanophotonic waveguide. United States. doi:10.1103/PhysRevA.97.033829.
Qi, Xiaodong, Jau, Yuan-Yu, and Deutsch, Ivan H. Fri . "Enhanced cooperativity for quantum-nondemolition-measurement–induced spin squeezing of atoms coupled to a nanophotonic waveguide". United States. doi:10.1103/PhysRevA.97.033829. https://www.osti.gov/servlets/purl/1429712.
@article{osti_1429712,
title = {Enhanced cooperativity for quantum-nondemolition-measurement–induced spin squeezing of atoms coupled to a nanophotonic waveguide},
author = {Qi, Xiaodong and Jau, Yuan-Yu and Deutsch, Ivan H.},
abstractNote = {We study the enhancement of cooperativity in the atom-light interface near a nanophotonic waveguide for application to QND measurement of atomic spins. Here the cooperativity per atom is determined by the ratio between the measurement strength and the decoherence rate. Counterintuitively, we find that by placing the atoms at an azimuthal position where the guided probe mode has the lowest intensity, we increase the cooperativity. This arises because the QND measurement strength depends on the interference between the probe and scattered light guided into an orthogonal polarization mode, while the decoherence rate depends on the local intensity of the probe. Thus, by proper choice of geometry, the ratio of good to bad scattering can be strongly enhanced for highly anisotropic modes. We apply this to study spin squeezing resulting from QND measurement of spin projection noise via the Faraday effect in two nanophotonic geometries, a cylindrical nano fiber and a square waveguide. We nd, with about 2500 atoms using realistic experimental parameters, ~ 6:3 dB and ~ 13 dB of squeezing can be achieved on the nano fiber and square waveguide, respectively.},
doi = {10.1103/PhysRevA.97.033829},
journal = {Physical Review A},
number = 3,
volume = 97,
place = {United States},
year = {2018},
month = {3}
}

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Works referenced in this record:

Nonlinear π phase shift for single fibre-guided photons interacting with a single resonator-enhanced atom
journal, November 2014


Field intensity distributions and polarization orientations in a vacuum-clad subwavelength-diameter optical fiber
journal, December 2004


Magnetic Sensitivity Beyond the Projection Noise Limit by Spin Squeezing
journal, December 2012


Optically Generated 2-Dimensional Photonic Cluster State from Coupled Quantum Dots
journal, August 2010


Vector Finite Difference Modesolver for Anisotropic Dielectric Waveguides
journal, June 2008

  • Fallahkhair, Arman B.; Li, Kai S.; Murphy, Thomas E.
  • Journal of Lightwave Technology, Vol. 26, Issue 11
  • DOI: 10.1109/JLT.2008.923643

Universal photonic quantum computation via time-delayed feedback
journal, October 2017

  • Pichler, Hannes; Choi, Soonwon; Zoller, Peter
  • Proceedings of the National Academy of Sciences, Vol. 114, Issue 43
  • DOI: 10.1073/pnas.1711003114

Atom–light interactions in photonic crystals
journal, May 2014

  • Goban, A.; Hung, C. -L.; Yu, S. -P.
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms4808

Enhanced Squeezing of a Collective Spin via Control of Its Qudit Subsystems
journal, October 2012


Nanofiber-mediated radiative transfer between two distant atoms
journal, December 2005


Backscattering properties of a waveguide-coupled array of atoms in the strongly nonparaxial regime
journal, March 2014


Dispersive Optical Interface Based on Nanofiber-Trapped Atoms
journal, December 2011


Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms
journal, December 2015


Integrated optical dipole trap for cold neutral atoms with an optical waveguide coupler
journal, April 2013


Trapped atoms in cavity QED: coupling quantized light and matter
journal, April 2005

  • Miller, R.; Northup, T. E.; Birnbaum, K. M.
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 38, Issue 9
  • DOI: 10.1088/0953-4075/38/9/007

Quantum computing by optical control of electron spins
journal, September 2010


Manipulating quantum entanglement with atoms and photons in a cavity
journal, August 2001


States of an Ensemble of Two-Level Atoms with Reduced Quantum Uncertainty
journal, February 2010


Atomic quantum non-demolition measurements and squeezing
journal, June 1998


Spin squeezing and pairwise entanglement for symmetric multiqubit states
journal, July 2003


Dynamics of trapped atoms around an optical nanofiber probed through polarimetry
journal, January 2017

  • Solano, Pablo; Fatemi, Fredrik K.; Orozco, Luis A.
  • Optics Letters, Vol. 42, Issue 12
  • DOI: 10.1364/OL.42.002283

Measurement noise 100 times lower than the quantum-projection limit using entangled atoms
journal, January 2016

  • Hosten, Onur; Engelsen, Nils J.; Krishnakumar, Rajiv
  • Nature, Vol. 529, Issue 7587
  • DOI: 10.1038/nature16176

Quantum nondemolition measurement of spin via the paramagnetic Faraday rotation
journal, December 1999


Atom-light interactions in quasi-one-dimensional nanostructures: A Green's-function perspective
journal, March 2017


Storage of fiber-guided light in a nanofiber-trapped ensemble of cold atoms
journal, January 2015


Photonic Circuits with Time Delays and Quantum Feedback
journal, March 2016


Deterministic Squeezed States with Collective Measurements and Feedback
journal, March 2016


Spin squeezing and reduced quantum noise in spectroscopy
journal, December 1992


Chiral quantum optics
journal, January 2017

  • Lodahl, Peter; Mahmoodian, Sahand; Stobbe, Søren
  • Nature, Vol. 541, Issue 7638
  • DOI: 10.1038/nature21037

Entangled Photon Pairs from Semiconductor Quantum Dots
journal, April 2006


A straightforward introduction to continuous quantum measurement
journal, September 2006


Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics
journal, September 2004

  • Wallraff, A.; Schuster, D. I.; Blais, A.
  • Nature, Vol. 431, Issue 7005
  • DOI: 10.1038/nature02851

Strong Coupling between a Trapped Single Atom and an All-Fiber Cavity
journal, August 2015


Nanowire photonic crystal waveguides for single-atom trapping and strong light-matter interactions
journal, March 2014

  • Yu, S. -P.; Hood, J. D.; Muniz, J. A.
  • Applied Physics Letters, Vol. 104, Issue 11
  • DOI: 10.1063/1.4868975

Generation and Detection of a Sub-Poissonian Atom Number Distribution in a One-Dimensional Optical Lattice
journal, December 2014


Deterministic generation of a cluster state of entangled photons
journal, September 2016


Quantum many-body models with cold atoms coupled to photonic crystals
journal, April 2015


Spin Squeezing of a Cold Atomic Ensemble with the Nuclear Spin of One-Half
journal, January 2009


Optical Interface Created by Laser-Cooled Atoms Trapped in the Evanescent Field Surrounding an Optical Nanofiber
journal, May 2010


Inhomogeneous broadening of optical transitions of 87 Rb atoms in an optical nanofiber trap
journal, July 2015

  • Lee, J.; Grover, J. A.; Hoffman, J. E.
  • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 48, Issue 16
  • DOI: 10.1088/0953-4075/48/16/165004

Demonstration of a State-Insensitive, Compensated Nanofiber Trap
journal, July 2012


Demonstration of a Memory for Tightly Guided Light in an Optical Nanofiber
journal, May 2015


Strong Interactions of Single Atoms and Photons in Cavity QED
journal, January 1998


Synthesizing arbitrary quantum states in a superconducting resonator
journal, May 2009


Self-Organization of Atoms along a Nanophotonic Waveguide
journal, March 2013


Coherence Properties of Nanofiber-Trapped Cesium Atoms
journal, June 2013


Spin squeezing of atomic ensembles by multicolor quantum nondemolition measurements
journal, February 2009


Quantum control and measurement of atomic spins in polarization spectroscopy
journal, March 2010


Quantum state-controlled directional spontaneous emission of photons into a nanophotonic waveguide
journal, December 2014

  • Mitsch, R.; Sayrin, C.; Albrecht, B.
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms6713

Exponential Improvement in Photon Storage Fidelities Using Subradiance and “Selective Radiance” in Atomic Arrays
journal, August 2017


Generation of single optical plasmons in metallic nanowires coupled to quantum dots
journal, November 2007

  • Akimov, A. V.; Mukherjee, A.; Yu, C. L.
  • Nature, Vol. 450, Issue 7168
  • DOI: 10.1038/nature06230

Three-dimensional light-matter interface for collective spin squeezing in atomic ensembles
journal, March 2014


Mesoscopic atomic entanglement for precision measurements beyond the standard quantum limit
journal, June 2009

  • Appel, J.; Windpassinger, P. J.; Oblak, D.
  • Proceedings of the National Academy of Sciences, Vol. 106, Issue 27
  • DOI: 10.1073/pnas.0901550106

Cooperative enhancement of channeling of emission from atoms into a nanofiber
journal, January 2008


Trapped atoms in one-dimensional photonic crystals
journal, August 2013


Super-radiance reveals infinite-range dipole interactions through a nanofiber
journal, November 2017