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 quantum switching

Prem Kumar, Yu‐Ping Huang

Published Jun 25, 2013• 0 citations
OpenAlex

Abstract

We will present progress in ultrafast all-optical quantum switching. χ(3)-based devices can route entangled photons without disturbing their quantum state, whereas χ(2)-based devices can, in principle, lead to dissipation-free quantum-optical Fredkin gates.

Related papers

All-optical quantum switching

Prem Kumar, Yu‐Ping Huang

We will present progress in ultrafast all-optical quantum switching. c(3)-based devices can route entangled photons without disturbing their quantum state, whereas c(2)-based devices can, in principle, lead to dissipation-free quantum-optical Fredkin gates.

International conference on fiber optics and photonics•Jan 1, 2012•0 citations

All-optical quantum switching

Prem Kumar

I will present progress in ultrafast all-optical quantum switching. c(3)-based devices can route entangled single photons without disturbing their quantum state [1], whereas c(2)-based devices can, in principle, lead to dissipation-free quantum-optical Fredkin gates [2].

Conference on Lasers and Electro-Optics•Jan 1, 2012•0 citations

Ultrafast switching of photonic entanglement

Neal N. Oza, Yu‐Ping Huang, Prem Kumar

We present our recent development of fiber-optic technology for all-optical switching and routing of entangled photons at high speeds, with minimal loss and added in-band noise, and-most importantly-without disturbing the photons' quantum state.

IEEE Photonics Conference•Sep 1, 2012•1 citation

Quantum information processing in the telecom waveband

Prem Kumar, Yuping Huang, Joseph B. Altepeter +3 more

We present recent progress in all-optical routing of entangled single photons at high speeds, with minimal loss and added in-band noise, and—most importantly—without disturbing the photons’ quantum state.

Optical Fiber Communication Conference•Jan 1, 2012•0 citations

Interaction-Free Quantum Optical Fredkin Gates in $\chi^{(2)}$ Microdisks

Yuping Huang, Prem Kumar

We present novel “interaction-free” realizations of quantum optical Fredkin gates that do not rely on direct physical coupling between the target light (signal) and the control light (pump). The interaction-free feature of such gates allow to overcome the fundamental limits of photon loss and quantum-state decoherence imposed by the signal-pump coupling. This advantage, together with the low inherent quantum-noise level in χ(2)microdisks, gives rise to substantially improved performance over the existing Fredkin-gate designs. Explicitly using lithium-niobate mircrodisks, we present two kinds of interaction-free Fredkin gates, a phase gate and an optical-path gate, both of which are designed with telecom-band applications in mind. For both gates, the threshold pump peak power to achieve a gate contrast >;100 and a signal loss <;10% is hundreds of microwatts for practical parameters of the devices.

IEEE Journal of Selected Topics in Quantum Electronics•Apr 7, 2011•29 citations

Towards photonic quantum networks

Joseph B. Altepeter, Monika Patel, Neal N. Oza +2 more

We discuss O-band entangled photon pair sources and entangled photon switching technologies and their application to quantum communications and quantum information processing.

IEEE/LEOS Summer Topical Meetings•Jul 1, 2011•0 citations
Interaction-Free Quantum Optical Fredkin Gates in χ(2)\chi^{(2)}χ(2) Microdisks
We present novel “interaction-free” realizations of quantum optical Fredkin gates that do not rely on direct physical coupling between the target light (signal) and the control light (pump). The interaction-free feature of such gates allow to overcome the fundamental limits of photon loss and quantum-state decoherence imposed by the signal-pump coupling. This advantage, together with the low inherent quantum-noise level in χ(2)microdisks, gives rise to substantially improved performance over the existing Fredkin-gate designs. Explicitly using lithium-niobate mircrodisks, we present two kinds of interaction-free Fredkin gates, a phase gate and an optical-path gate, both of which are designed with telecom-band applications in mind. For both gates, the threshold pump peak power to achieve a gate contrast >;100 and a signal loss <;10% is hundreds of microwatts for practical parameters of the devices.