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Demonstration of a high-fidelity, deterministic and universal squeezing transformation

Jun–ichi Yoshikawa, Toshiki Hayashi, Takayuki Akiyama +4 more

By employing at recent proposal (R. Filip, P. Marek and U.L. Andersen, Phys. Rev. A {\\bf 71}, 042308 (2005)), we experimentally demonstrate a high-fidelity, deterministic and universal squeezing transformation of a quantum state. The approach circumvents a direct interaction between a strong pump and the quantum state, but relies only on linear optics, homodyne detection, feedforward and an ancillary squeezed vacuum state. We demonstrate three different squeezing operations with attained fidelities of 94%, 89% and 78%.By employing at recent proposal (R. Filip, P. Marek and U.L. Andersen, Phys. Rev. A {\\bf 71}, 042308 (2005)), we experimentally demonstrate a high-fidelity, deterministic and universal squeezing transformation of a quantum state. The approach circumvents a direct interaction between a strong pump and the quantum state, but relies only on linear optics, homodyne detection, feedforward and an ancillary squeezed vacuum state. We demonstrate three different squeezing operations with attained fidelities of 94%, 89% and 78%.

Feb 6, 20071 citation

Demonstration of deterministic and high fidelity squeezing of quantum information

Jun–ichi Yoshikawa, Toshiki Hayashi, Takayuki Akiyama +4 more

By employing a recent proposal [R. Filip, P. Marek, and U.L. Andersen, Phys. Rev. A 71, 042308 (2005)] we experimentally demonstrate a universal, deterministic, and high-fidelity squeezing transformation of an optical field. It relies only on linear optics, homodyne detection, feedforward, and an ancillary squeezed vacuum state, thus direct interaction between a strong pump and the quantum state is circumvented. We demonstrate three different squeezing levels for a coherent state input. This scheme is highly suitable for the fault-tolerant squeezing transformation in a continuous variable quantum computer.By employing a recent proposal [R. Filip, P. Marek, and U.L. Andersen, Phys. Rev. A 71, 042308 (2005)] we experimentally demonstrate a universal, deterministic, and high-fidelity squeezing transformation of an optical field. It relies only on linear optics, homodyne detection, feedforward, and an ancillary squeezed vacuum state, thus direct interaction between a strong pump and the quantum state is circumvented. We demonstrate three different squeezing levels for a coherent state input. This scheme is highly suitable for the fault-tolerant squeezing transformation in a continuous variable quantum computer.

arXiv:quant-ph/0702049Physical Review ADec 11, 200797 citations

Unconditional Conversion between a Single-Photon State and a Coherent-State Superposition via Squeezing Operation

Yoshichika Miwa, Jun–ichi Yoshikawa, Noriaki Iwata +5 more

We experimentally demonstrate a conversion of a single-photon state into a superposition of two weak coherent states and its inverse, via squeezing operation based on offline-prepared squeezed states, measurement and feedforward.

Conference on Lasers and Electro-OpticsJan 1, 20121 citation

Teleportation-based squeezer for bosonic cluster states

Michal Matulík, Radim Filip, Petr Marek

The one-way quantum computation utilizing bosonic modes of light offers unmatched scalability of light modes, and it has seen rapid experimental development recently. Scalability requires robust and low-error gates and measurements. Squeezing gate is one of the necessary Gaussian operations. We find the optimal squeezing gate in cluster-state architecture. Our approach newly uses amplitude transmission coefficients of unbalanced beam splitters and homodyne detection with subsequent unity-gain feedforward to squeeze the input state. The approach outperforms the current method based on optimally rotated homodyne detection but fixed balanced beam splitters. The performance of both cluster-state squeezers is evaluated for Gaussian and non-Gaussian input states. We use different metrics to benchmark the quality of squeezed output states. The result opens a road to low-noise squeezing gates in experimentally achievable cluster states.The one-way quantum computation utilizing bosonic modes of light offers unmatched scalability of light modes, and it has seen rapid experimental development recently. Scalability requires robust and low-error gates and measurements. Squeezing gate is one of the necessary Gaussian operations. We find the optimal squeezing gate in cluster-state architecture. Our approach newly uses amplitude transmission coefficients of unbalanced beam splitters and homodyne detection with subsequent unity-gain feedforward to squeeze the input state. The approach outperforms the current method based on optimally rotated homodyne detection but fixed balanced beam splitters. The performance of both cluster-state squeezers is evaluated for Gaussian and non-Gaussian input states. We use different metrics to benchmark the quality of squeezed output states. The result opens a road to low-noise squeezing gates in experimentally achievable cluster states.

arXiv:2510.27661Physical Review ResearchMay 27, 20260 citations

Deterministic Squeezed States with Joint Measurements and Feedback

Graham P. Greve, Kevin C. Cox, Baochen Wu +1 more

Bulletin of the American Physical SocietyMay 25, 20162 citations

General expressions of higher-order squeezing for even and odd coherent states

Hong-Yi Fan, Zhongxi Zhang

Physics Letters AAug 1, 19932 citations

Universal squeezer via the measurement-and-feedforward approach

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Universal squeezer via the measurement-and-feedforward approach

Abstract

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