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

International Conference on Quantum Information

Control of superposition states of continuous variables by photon counting and filtering with cw squeezed light

Masahide Sasaki, Hiroyuki Takahashi, Kentaro Wakui, Masahiro Takeoka, S. Suzuki, K. Hayasaka

Published Jan 1, 2008• 0 citations
Publisher

Abstract

The two-photon subtraction from overlappping squeezed packets generates temporally multiplexed superposition states of continuous variables with a designated time separation. In an appropriate mode an amplified superposition state is produced due to bosonic quantum interference.
DOI
10.1364/icqi.2008.qma3

Related papers

Temporally multiplexed superposition states of continuous variables

Masahide Sasaki, Masahiro Takeoka, Hiroki Takahashi

We study non-Gaussian states generated by two-photon subtraction from a continuous-wave (cw) squeezed light source. In a cw scheme, one can subtract two photons from the source with a designated time separation and can generate temporally multiplexed superposition states of continuous variables. We numerically study the properties of these states in light of bosonic interference in the time domain. In an appropriate temporal mode, an amplified superposition state of continuous variable is produced in a region where the time separation is comparable with the coherence time of squeezed packets.

arXiv:0804.0354•Physical Review A•Jun 30, 2008•25 citations

Coherent superposition of photon subtraction- and addition-based two-mode squeezed coherent state: quantum properties and its applications

Wei Ye, Ying Guo, Huan Zhang +4 more

Quantum Information Processing•Jan 18, 2023•12 citations

Generation of a stable squeezed light for continuous-variable quantum interference

Hiroshi Matsumori

The Japan Society of Applied Physics•Jul 4, 2013•0 citations

Non-Gaussian control of continuous variables with photon counting and filtering

Masahide Sasaki, Kentaro Wakui, Hiroki Takahashi +2 more

We study various non-Gaussian states generated by photon subtrastion from a squeezed light source. The source is a cw beam generated by optical parametric oscillator. The photon subtraction is made by tapping a small fraction of the squeezed light source and by guiding it into two Si-APDs, which enable the subtraction of one to two photons. Trigger photon clicks specify a certain temporally localized mode in the remaining squeezed beam. By filtering the remaining squeezed beam through an appropriate mode function, one can generate a variety of non-Gaussian states. This includes single and two photon states, the NOON state (N = 2), Schrödinger kitten states of both odd and even parities, and their arbitrarily desired superposition.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Sep 9, 2007•0 citations

Large-amplitude coherent-state superposition generated by a time-separated two-photon subtraction from a continuous-wave squeezed vacuum

Masahiro Takeoka, Hiroki Takahashi, Masahide Sasaki

A theoretical analysis is given for a two-photon subtraction from a continuous-wave squeezed vacuum with finite time separation between two detection events. In the cw photon subtraction process, generated states are inevitably described by temporal multimode states. Our approach is based on analytical formulas that are mathematically simple and provide an intuitive understanding of the multimode structure of the system. We show that, in our process, the photon-subtracted squeezed vacuum is generated in two temporal modes and one of these modes acts as an ancillary mode to make the other one a large-amplitude coherent-state superposition.

arXiv:0804.0464•Physical Review A•Jun 12, 2008•42 citations

Quantum-Controlled Few-Photon States Generated by Squeezed Atoms

Hiroki Saito

•Jan 1, 1997•0 citations
We study non-Gaussian states generated by two-photon subtraction from a continuous-wave (cw) squeezed light source. In a cw scheme, one can subtract two photons from the source with a designated time separation and can generate temporally multiplexed superposition states of continuous variables. We numerically study the properties of these states in light of bosonic interference in the time domain. In an appropriate temporal mode, an amplified superposition state of continuous variable is produced in a region where the time separation is comparable with the coherence time of squeezed packets.
We study various non-Gaussian states generated by photon subtrastion from a squeezed light source. The source is a cw beam generated by optical parametric oscillator. The photon subtraction is made by tapping a small fraction of the squeezed light source and by guiding it into two Si-APDs, which enable the subtraction of one to two photons. Trigger photon clicks specify a certain temporally localized mode in the remaining squeezed beam. By filtering the remaining squeezed beam through an appropriate mode function, one can generate a variety of non-Gaussian states. This includes single and two photon states, the NOON state (N = 2), Schrödinger kitten states of both odd and even parities, and their arbitrarily desired superposition.
A theoretical analysis is given for a two-photon subtraction from a continuous-wave squeezed vacuum with finite time separation between two detection events. In the cw photon subtraction process, generated states are inevitably described by temporal multimode states. Our approach is based on analytical formulas that are mathematically simple and provide an intuitive understanding of the multimode structure of the system. We show that, in our process, the photon-subtracted squeezed vacuum is generated in two temporal modes and one of these modes acts as an ancillary mode to make the other one a large-amplitude coherent-state superposition.