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We propose a linear optical quantum computation scheme using time-frequency degree of freedom. In this scheme, a qubit is encoded in single-photon frequency combs, and manipulation of the qubits is performed using time-resolving detectors,…

Quantum Physics · Physics 2023-06-13 Tomohiro Yamazaki , Tomoaki Arizono , Toshiki Kobayashi , Rikizo Ikuta , Takashi Yamamoto

We propose a scalable scheme for optical quantum computing using measurement-induced continuous-variable quantum gates in a loop-based architecture. Here, time-bin-encoded quantum information in a single spatial mode is deterministically…

Quantum Physics · Physics 2017-09-27 Shuntaro Takeda , Akira Furusawa

The ubiquity of optical communications is due in large part to the advent of the optical fibre, which allows for flexible and efficient routing of light-encoded information. Used as serial channels, single fibres have also been shown to be…

Quantum Physics · Physics 2018-08-23 J. Hordell , D. Benedicto-Orenes , P. G. Petrov , A. U. Kowalczyk , G. Barontini , V. Boyer

Entanglement has the ability to enhance the transmission of classical information over a quantum channel. However, fully harvesting this advantage typically requires complex entangling measurements, which are challenging to implement and…

We investigate two-photon quantum interference in an opaque scattering medium that intrinsically supports $10^6$ transmission channels. By adaptive spatial phase-modulation of the incident wavefronts, the photons are directed at targeted…

Photons at telecom wavelength are the ideal choice for high density interconnects while solid state qubits in the microwave domain offer strong interactions for fast quantum logic. Here we present a general purpose, quantum-enabled…

Quantum Physics · Physics 2022-03-30 Rishabh Sahu , William Hease , Alfredo Rueda , Georg Arnold , Liu Qiu , Johannes Fink

The next generation of telecommunication networks will rely on the transmission of complex quantum states to enable secure and transformative information processing, utilizing entanglement and superposition. Cluster states - multipartite…

Quantum Physics · Physics 2025-08-14 Philip Rübeling , Robert Johanning , Jan Heine , Oleksandr V. Marchukov , Michael Kues

The ultimate goal of quantum information science is to build a global quantum network, which enables quantum resources to be distributed and shared between remote parties. Such quantum network can be realized by all fiber elements, which…

Quantum Physics · Physics 2016-10-19 Yin-Hai Li Zhi-Yuan Zhou , Zhao-Huai Xu , Li-Xin Xu , Bao-Sen Shi , Guang-Can Guo

Currently proposed architectures for long-distance quantum communication rely on networks of quantum processors connected by optical communications channels [1,2]. The key resource for such networks is the entanglement of matter-based…

Quantum Physics · Physics 2015-05-20 D Kielpinski , JF Corney , HM Wiseman

Routing of photon play a key role in optical communication and quantum networks. Although the quantum routing of signals has been investigated in various systems both in theory and experiment. However, no current theory can route quantum…

Quantum Physics · Physics 2014-10-17 Peng-Cheng Ma , Jian-Qi Zhang , Mang Feng , Zhi-Ming Zhang

Quantum networks enhance quantum communication schemes and link multiple users over large areas. Harnessing high dimensional quantum states - i.e. qu-d-its - allows for a denser transfer of information with increased robustness to noise…

In recent years, there has been a rising interest in high-dimensional quantum states and their impact on quantum communication. Indeed, the availability of an enlarged Hilbert space offers multiple advantages, from larger information…

Quantum Physics · Physics 2019-10-17 Daniele Cozzolino , Beatrice Da Lio , Davide Bacco , Leif Katsuo Oxenløwe

We employed an electrically-driven polarization controller to implement anisotropic depolarizing quantum channels for the polarization state of single photons. The channels were characterized by means of ancilla-assisted quantum process…

Quantum Physics · Physics 2010-07-22 Michal Karpinski , Czeslaw Radzewicz , Konrad Banaszek

We describe a new version of continuous variables quantum holographic teleportation of optical images. Unlike the previously proposed scheme, it is based on the continuous variables quantum entanglement between the light fields of different…

Quantum Physics · Physics 2009-11-13 Liubov V. Magdenko , Ivan V. Sokolov , Mikhail I. Kolobov

Controlling the temporal mode shape of quantum light pulses has wide ranging application to quantum information science and technology. Techniques have been developed to control the bandwidth, allow shifting in the time and frequency…

The propagation of the quantum states of light in dispersive and anisotropic media is a fundamental problem in quantum optics. We present a unified theoretical framework for the propagation of the quantum states of light in…

Optics · Physics 2026-04-14 Gyaprasad , Rajneesh Joshi

Vibrational degrees of freedom in trapped-ion systems have recently been gaining attention as a quantum resource, beyond the role as a mediator for entangling quantum operations on internal degrees of freedom, because of the large available…

Quantum Physics · Physics 2021-07-01 Wentao Chen , Jaren Gan , Jing-Ning Zhang , Dzmitry Matuskevich , Kihwan Kim

The use of high-dimensional systems for quantum communication opens interesting perspectives, such as increased information capacity and noise resilience. In this context, it is crucial to certify that a given quantum channel can reliably…

This paper develops a theoretical framework for enabling seamless transfer of digital information from classical microwave domain to the quantum optical domain in wireless-to-optical converters. A quantum mechanical network model is…

Quantum Physics · Physics 2024-06-27 Niloy Ghosh , Sarang Pendharker

Atomic vapors offer many opportunities for manipulating electromagnetic signals across a broad range of the electromagnetic spectrum. Here, a microwave signal with an audio-frequency modulation encodes information in an optical signal by…

Quantum Physics · Physics 2020-05-01 A. Tretiakov , C. A. Potts , T. S. Lee , M. J. Thiessen , J. P. Davis , L. J. LeBlanc