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

All-Optical Switch at Telecom Wavelength based on the Quantum Zeno Effect (QZE)

Subramanian Krishnamurthy, Yu-Hong Wang, Yongming Tu, S. Tseng, M. S. Shahriar

Published Jan 1, 2013• 0 citations
Publisher

Abstract

We present experimental realizations and numerical simulations of an optically controlled Polarizer and Waveplate at telecom wavelength using ladder transitions in 87Rb. When combined, it can be used to realize a QZE based all-optical switch.
DOI
10.1364/cleo_si.2013.cm3h.2

Related papers

Optically Controlled Waveplate at a Telecom Wavelength Using a Ladder Transition in Rb Atoms for All-Optical Switching via the Quantum Zeno Effect

K. Subramanian, Yu-Hong Wang, S. Tseng +2 more

We show, theoretically and experimentally, how to realize an optically controlled waveplate at a telecommunication wavelength using a ladder transition in Rb atoms at room temperature for all-optical switching via the quantum Zeno effect.

Frontiers in Optics•Jan 1, 2011•0 citations

Optically controlled polarizer and waveplate at telecom wavelength for Quantum Zeno Effect based all-optical switch

Subramanian Krishnamurthy, Ye Wang, Yanfei Tu +2 more

Bulletin of the American Physical Society•Jun 7, 2013•0 citations

High Efficieny, High Speed Optical Modulation at a Telecom Wavelength Using the Quantum Zeno Effect in a Ladder Transition in Rb Atoms

K. Subramanian, Y. Wang, Yongming Tu +2 more

We show, theoretically and experimentally, how a high efficiency, high speed optical modulator can be realized at a telecommunication wavelength using the quantum zeno effect in a ladder transition in Rb atoms at room temperature.

Frontiers in Optics•Jan 1, 2011•0 citations

Quantum Zeno effect based high speed optical modulator at a telecom wavelength in a ladder transition in Rb atoms

Subramanian Krishnamurthy, Yu-Hong Wang, S. Tseng +2 more

We show theoretical simulations of how a high speed optical modulator can be realized at a telecommunication wavelength using the buffer gas induced relaxation in a ladder transition in Rb atoms at room temperature.

Frontiers in Optics•Jan 1, 2012•0 citations

Quantum Zeno Blockade for Next Generation Optical Switching in Fiber Systems

Gregory S. Kanter, M. S. Shahriar

Abstract : All-optical switching is crucial for efficient optical communications. The quantum Zeno effect can be used to induce or inhibit optical switching through a variety of processes, all of which share the common characteristic that the evolution of one quantum state into another be inhibited or induced based on the presence or absence of a controllable and continuous quantum measurement. By utilizing this effect, it is the goal of this project to design and construct ultra-low power dissipation, ultra-low volume, fast all-optical switches. In particular, a fundamental limit in existing all-optical switching devices is due to the photon loss resulting from signal-pump coupling. When extended to the quantum domain, this photon loss additionally causes the quantum states of photonic signals to collapse (i.e., decohere). By using the quantum Zeno effect (QZE), it is possible to realize interaction-free switching that eliminates direct signal-pump coupling i.e., QZE for all-optical switching.

•Sep 1, 2013•0 citations

Optically controlled waveplate at a telecom wavelength using a ladder transition in Rb atoms for all-optical switching and high speed Stokesmetric imaging

Subramanian Krishnamurthy, Yongming Tu, Yu-Hong Wang +2 more

We demonstrate an optically controlled waveplate at ~1323 nm using the 5S(1/2)-5P(1/2)-6S(1/2) ladder transition in a Rb vapor cell. The lower leg of the transitions represents the control beam, while the upper leg represents the signal beam. We show that we can place the signal beam in any arbitrary polarization state with a suitable choice of polarization of the control beam. Specifically, we demonstrate a differential phase retardance of ~180 degrees between the two circularly polarized components of a linearly polarized signal beam. We also demonstrate that the system can act as a Quarter Wave plate. The optical activity responsible for the phase retardation process is explained in terms of selection rules involving the Zeeman sublevels. As such, the system can be used to realize a fast Stokesmetric imaging system with a speed of ~3 MHz. When implemented using a tapered nano fiber embedded in a vapor cell, this system can be used to realize an ultra-low power all-optical switch as well as a Quantum Zeno Effect based all-optical logic gate by combining it with an optically controlled polarizer, previously demonstrated by us. We present numerical simulations of the system using a comprehensive model which incorporates all the relevant Zeeman sub-levels in the system, using a novel algorithm recently developed by us for efficient computation of the evolution of an arbitrary large scale quantum system.

arXiv:1408.0297•Optics Express•Nov 12, 2014•7 citations
Abstract : All-optical switching is crucial for efficient optical communications. The quantum Zeno effect can be used to induce or inhibit optical switching through a variety of processes, all of which share the common characteristic that the evolution of one quantum state into another be inhibited or induced based on the presence or absence of a controllable and continuous quantum measurement. By utilizing this effect, it is the goal of this project to design and construct ultra-low power dissipation, ultra-low volume, fast all-optical switches. In particular, a fundamental limit in existing all-optical switching devices is due to the photon loss resulting from signal-pump coupling. When extended to the quantum domain, this photon loss additionally causes the quantum states of photonic signals to collapse (i.e., decohere). By using the quantum Zeno effect (QZE), it is possible to realize interaction-free switching that eliminates direct signal-pump coupling i.e., QZE for all-optical switching.
We demonstrate an optically controlled waveplate at ~1323 nm using the 5S(1/2)-5P(1/2)-6S(1/2) ladder transition in a Rb vapor cell. The lower leg of the transitions represents the control beam, while the upper leg represents the signal beam. We show that we can place the signal beam in any arbitrary polarization state with a suitable choice of polarization of the control beam. Specifically, we demonstrate a differential phase retardance of ~180 degrees between the two circularly polarized components of a linearly polarized signal beam. We also demonstrate that the system can act as a Quarter Wave plate. The optical activity responsible for the phase retardation process is explained in terms of selection rules involving the Zeeman sublevels. As such, the system can be used to realize a fast Stokesmetric imaging system with a speed of ~3 MHz. When implemented using a tapered nano fiber embedded in a vapor cell, this system can be used to realize an ultra-low power all-optical switch as well as a Quantum Zeno Effect based all-optical logic gate by combining it with an optically controlled polarizer, previously demonstrated by us. We present numerical simulations of the system using a comprehensive model which incorporates all the relevant Zeeman sub-levels in the system, using a novel algorithm recently developed by us for efficient computation of the evolution of an arbitrary large scale quantum system.