Zobrazeno 1 - 10
of 671
pro vyhledávání: '"P. van Loock"'
Autor:
Fukui, Kosuke, van Loock, Peter
Quantum computation with light, compared with other platforms, offers the unique benefit of natural high-speed operations at room temperature and large clock rate, but a big obstacle of photonics is the lack of strong nonlinearities which also makes
Externí odkaz:
http://arxiv.org/abs/2412.16536
Autor:
Shchukin, E., van Loock, P.
Continuous-variable Gaussian entanglement is an attractive notion, both as a fundamental concept in quantum information theory, based on the well-established Gaussian formalism for phase-space variables, and as a practical resource in quantum technol
Externí odkaz:
http://arxiv.org/abs/2412.09757
Multipartite entangled states, particularly Greenberger--Horne--Zeilinger (GHZ) and other graph states, are important resources in multiparty quantum network protocols and measurement-based quantum computing. We consider the problem of generating suc
Externí odkaz:
http://arxiv.org/abs/2412.04252
Autor:
Warke, Aakash, Nötzel, Janis, Takase, Kan, Asavanant, Warit, Nagayoshi, Hironari, Fukui, Kosuke, Takeda, Shuntaro, Furusawa, Akira, van Loock, Peter
We propose an efficient decomposition scheme for a quantum receiver that attains the Helstrom bound in the low-photon regime for discriminating binary coherent states. Our method, which avoids feedback as used in Dolinar's case, breaks down nonlinear
Externí odkaz:
http://arxiv.org/abs/2410.21800
Autor:
Schmidt, Frank, van Loock, Peter
Using numerical simulations, we explore generalized fusion measurements, extending them in three key ways. We incorporate ancilla-boosting and code-boosting to optimize fusion measurements, which may, but do not necessarily, correspond to Bell measur
Externí odkaz:
http://arxiv.org/abs/2410.20261
Publikováno v:
Quantum Sci. Technol. 9, 035044 (2024)
Recent results have shown that the secret-key rate of coherent-one-way (COW) quantum key distribution (QKD) scales quadratically with the system's transmittance, thus rendering this protocol unsuitable for long-distance transmission. This was proven
Externí odkaz:
http://arxiv.org/abs/2406.13760
Autor:
Häussler, Stefan, van Loock, Peter
Quantum repeaters that incorporate quantum error correction codes have been shown to be a promising alternative compared with the original quantum repeaters that rely upon probabilistic quantum error detection depending on classical communication ove
Externí odkaz:
http://arxiv.org/abs/2406.07158
Autor:
Hanamura, Fumiya, Asavanant, Warit, Nagayoshi, Hironari, Sakaguchi, Atsushi, Ide, Ryuhoh, Fukui, Kosuke, van Loock, Peter, Furusawa, Akira
Non-Gaussian quantum gates are essential components for optical quantum information processing. However, the efficient implementation of practically important multi-mode higher-order non-Gaussian gates has not been comprehensively studied. We propose
Externí odkaz:
http://arxiv.org/abs/2405.19067
Autor:
Romanova, Alena, van Loock, Peter
We address the challenge of incorporating encoded quantum memories into an exact secret key rate analysis for small and intermediate-scale quantum repeaters. To this end, we introduce the check matrix model and quantify the resilience of stabilizer c
Externí odkaz:
http://arxiv.org/abs/2405.07258
We investigate a generic tripartite quantum system featuring a single qubit interacting concurrently with two quantized harmonic oscillators via nonlinear multiphoton Jaynes-Cummings (MPJC) interactions. Assuming the qubit is initially prepared in a
Externí odkaz:
http://arxiv.org/abs/2404.13658