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

Fortschritte der Physik

Towards high‐fidelity two‐photon quantum communications

Gershon Kurizki, David Petrosyan

Published Apr 24, 2003• 0 citations
Publisher

Abstract

Abstract We propose two alternative scheme for highly efficient nonlinear interaction between weak optical fields. The first scheme is based on the attainment of electromagnetically induced transparency simultaneously for two fields via transitions between magnetically split F = 1 atomic sublevels, in the presence of two driving fields. The second scheme relies on simultaneous electromagnetically‐ and self‐induced transparencies of the two fields. Thereby, equal slow group velocities and giant cross‐phase modulation of the weak fields over long distances are achieved.

DOI
10.1002/prop.200310054

Related papers

Symmetric photon-photon coupling by atoms with Zeeman-split sublevels

David Petrosyan, Gershon Kurizki

We propose a simple scheme for highly efficient nonlinear interaction between two weak optical fields. The scheme is based on the attainment of electromagnetically induced transparency simultaneously for both fields via transitions between magnetically split $F=1$ atomic sublevels, in the presence of two driving fields. Thereby, equal slow group velocities and symmetric cross coupling of the weak fields over long distances are achieved. By simply tuning the fields, this scheme can either yield giant cross-phase modulation or ultrasensitive two-photon switching.

arXiv:quant-ph/0105043•Physical Review A•Mar 1, 2002•127 citations

Two-photon entanglement by atoms with Zeeman-split sublevels

David Petrosyan, Gershon Kurizki

We propose a simple scheme for highly efficient nonlinear interaction between two weak optical fields. The scheme is based on the attainment of electromagnetically induced transparency simultaneously for both fields via transitions between magnetically split F=1 atomic sublevels, in the presence of a single driving field. Thereby, equal slow group velocities and cross-coupling of the weak fields over long distances are achieved. Depending on the choice of parameters, this scheme can either yield giant cross-phase modulation or ultrasensitive two-photon switching, which can be used to fully entangle the two fields.

•May 10, 2001•0 citations

Double electromagnetically induced transparency and its application in quantum information

Zeng-Bin Wang, Karl-Peter Marzlin, Barry C. Sanders

Strong optical cross-phase modulation (XPM) for weak fields is tremendously important for optical quantum information (QI) processing and for all-optical switches in classical communication. A sufficiently large XPM would allow the design of deterministic controlled quantum gates for photonic qubits and thus enable universal optical quantum computation. Recently, several proposals have been brought forward to create large XPM using double electromagnetically induced transparency (DEIT) in which two weak signal light pulses travel at equally slow group velocity, but creating DEIT still poses an experimental challenge. We give a brief overview about DEIT and discuss its applications and limitations. A scheme that combines the best features of previous proposals and optimizes the large XPM parameter for DEIT schemes is outlined. Finally we devise a scheme to perform universal quantum information processing, which respects the bound on the achievable nonlinearity and addresses the requirement of quantum error correction.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Aug 31, 2006•0 citations

Large Cross-Phase Modulation between Slow Copropagating Weak Pulses in Rb87

Zeng-Bin Wang, Karl-Peter Marzlin, Barry C. Sanders

We propose a scheme to generate double electromagnetically induced transparency and optimal cross-phase modulation for two slow, copropagating pulses with matched group velocities in a single species of atom, namely 87Rb. A single pump laser is employed and a homogeneous magnetic field is utilized to avoid cancellation effects through the nonlinear Zeeman effect. We suggest a feasible preparational procedure for the atomic initial state to achieve matched group velocities for both signal fields.

arXiv:quant-ph/0602029•Physical Review Letters•Aug 9, 2006•155 citations

Giant Kerr nonlinearities obtained by electromagnetically induced transparency

Holger Schmidt, Ataç İmamoğlu

We analyze a cross-phase modulation (XPM) scheme that exhibits a giant, resonantly enhanced nonlinearity, along with vanishing linear susceptibilities. The proposed atomic system uses an electromagnetically induced transparency and is limited only by two-photon absorption. We predict dramatic improvement by several orders of magnitude for conditional phase shifts in XPM, and the system has possible applications in quantum nondemolition measurements and for quantum logic gates.

Optics Letters•Dec 1, 1996•1,176 citations

Giant nonlinearities via simultaneous electromagnetically- and self-induced transparencies in doped photonic crystals

Gershon Kurizki, David Petrosyan

Photonic crystals doped with resonant atoms allow for an efficient cross-coupling between pulses exhibiting electromagnetically induced transparency and self-induced transparency gap solitons. These features may find applications in high-fidelity classical and quantum optical communications.

Nonlinear Guided Waves and Their Applications•Jan 1, 2002•0 citations
Abstract We propose two alternative scheme for highly efficient nonlinear interaction between weak optical fields. The first scheme is based on the attainment of electromagnetically induced transparency simultaneously for two fields via transitions between magnetically split F = 1 atomic sublevels, in the presence of two driving fields. The second scheme relies on simultaneous electromagnetically‐ and self‐induced transparencies of the two fields. Thereby, equal slow group velocities and giant cross‐phase modulation of the weak fields over long distances are achieved.
We propose a simple scheme for highly efficient nonlinear interaction between two weak optical fields. The scheme is based on the attainment of electromagnetically induced transparency simultaneously for both fields via transitions between magnetically split F=1F=1F=1 atomic sublevels, in the presence of two driving fields. Thereby, equal slow group velocities and symmetric cross coupling of the weak fields over long distances are achieved. By simply tuning the fields, this scheme can either yield giant cross-phase modulation or ultrasensitive two-photon switching.
We propose a simple scheme for highly efficient nonlinear interaction between two weak optical fields. The scheme is based on the attainment of electromagnetically induced transparency simultaneously for both fields via transitions between magnetically split F=1 atomic sublevels, in the presence of a single driving field. Thereby, equal slow group velocities and cross-coupling of the weak fields over long distances are achieved. Depending on the choice of parameters, this scheme can either yield giant cross-phase modulation or ultrasensitive two-photon switching, which can be used to fully entangle the two fields.
Strong optical cross-phase modulation (XPM) for weak fields is tremendously important for optical quantum information (QI) processing and for all-optical switches in classical communication. A sufficiently large XPM would allow the design of deterministic controlled quantum gates for photonic qubits and thus enable universal optical quantum computation. Recently, several proposals have been brought forward to create large XPM using double electromagnetically induced transparency (DEIT) in which two weak signal light pulses travel at equally slow group velocity, but creating DEIT still poses an experimental challenge. We give a brief overview about DEIT and discuss its applications and limitations. A scheme that combines the best features of previous proposals and optimizes the large XPM parameter for DEIT schemes is outlined. Finally we devise a scheme to perform universal quantum information processing, which respects the bound on the achievable nonlinearity and addresses the requirement of quantum error correction.