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

Physical Review A

Efficient description of parametric amplification of quantum pulses

Victor Rueskov Christiansen, Klaus Mølmer, Emanuel Hubenschmid

Published Oct 7, 2026• 0 citations
Publisher
DOI
10.1103/lm14-kzlg

Related papers

Boosting quantum efficiency using multi-stage parametric amplification

Joseph W. Haus, Anup R. Pandey, Peter Powers

Optics Communications•Oct 6, 2006•18 citations

Efficient Long Range Communication by Quantum Injected Optical Parametric Amplification

Chiara Vitelli, Lorenzo Toffoli, Fabio Sciarrino +1 more

Lecture notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering•Jan 1, 2010•1 citation

Efficient Description of Parametric Amplification of Quantum Pulses

Victor Rueskov Christiansen, Klaus Mølmer, Emanuel Hubenschmid

A single quantum pulse undergoing parametric amplification feeds into at most two pulses in the output. In this work, we present an efficient, analytical method for finding the quantum state of these output modes. Our method applies the amplification to the vacuum rather than to the input state, and subsequently applies a transformed version of the operator that creates the input state from vacuum. Given the input and output pulse mode functions, the method is analytical, and therefore computationally very efficient, and it can be readily generalized to multiple non-vacuum input modes. We exemplify the method by computing the output quantum states resulting from the input of a coherent, a Schrödinger cat, and a single photon input quantum state. We further employ the method to obtain the quantum state in one of the two output modes heralded upon detection of vacuum in the other, least populated, mode.

quant-pharXiv:2606.04759•Jun 4, 2026•0 citations

Quantum statistics of parametric amplification

Ladislav Mišta, Jan Peřina

Czechoslovak Journal of Physics•Apr 1, 1978•34 citations

Efficient hybridized parametric amplification enabled by quasiphase matching with quasiperiodic gratings

Amir F. Amhaz, Jeffrey Moses

Hybridized parametric amplification (HPA), a recent method to achieve high-efficiency parametric amplification by suppressing back-conversion with idler second harmonic generation, has been demonstrated so far only by birefringent phase matching. In this work, we demonstrate HPA by quasi-phase matching (QPM) in quasiperiodic-poled lithium niobate. QPM greatly expands the tuning range of HPA, while avoiding the limitations imposed by spatial walkoff of noncollinear beams. Since HPA has two concurrent processes, QPM requires a quasiperiodic grating with longitudinal spatial frequency peaks at both the parametric amplification and idler second harmonic generation phase mismatches. We investigate several grating designs for high-efficiency HPA in the near-infrared range. Quantum efficiencies of 70-80% are possible for devices pumped at 1030 nm, for both femtosecond and picosecond duration regimes. Pulse energies over 1 mJ can be accommodated using a chirped pump. However, devices must be designed carefully around the propagation effects of temporal walk-off and self-phase modulation.

Nonlinear Frequency Generation and Conversion: Materials and Devices•Mar 21, 2025•0 citations

Beyond the standard quantum limit of parametric amplification

Michael Renger, Stefan Pogorzalek, Qiming Chen +6 more

Bulletin of the American Physical Society•Mar 15, 2021•0 citations
A single quantum pulse undergoing parametric amplification feeds into at most two pulses in the output. In this work, we present an efficient, analytical method for finding the quantum state of these output modes. Our method applies the amplification to the vacuum rather than to the input state, and subsequently applies a transformed version of the operator that creates the input state from vacuum. Given the input and output pulse mode functions, the method is analytical, and therefore computationally very efficient, and it can be readily generalized to multiple non-vacuum input modes. We exemplify the method by computing the output quantum states resulting from the input of a coherent, a Schrödinger cat, and a single photon input quantum state. We further employ the method to obtain the quantum state in one of the two output modes heralded upon detection of vacuum in the other, least populated, mode.
Hybridized parametric amplification (HPA), a recent method to achieve high-efficiency parametric amplification by suppressing back-conversion with idler second harmonic generation, has been demonstrated so far only by birefringent phase matching. In this work, we demonstrate HPA by quasi-phase matching (QPM) in quasiperiodic-poled lithium niobate. QPM greatly expands the tuning range of HPA, while avoiding the limitations imposed by spatial walkoff of noncollinear beams. Since HPA has two concurrent processes, QPM requires a quasiperiodic grating with longitudinal spatial frequency peaks at both the parametric amplification and idler second harmonic generation phase mismatches. We investigate several grating designs for high-efficiency HPA in the near-infrared range. Quantum efficiencies of 70-80% are possible for devices pumped at 1030 nm, for both femtosecond and picosecond duration regimes. Pulse energies over 1 mJ can be accommodated using a chirped pump. However, devices must be designed carefully around the propagation effects of temporal walk-off and self-phase modulation.