Mapping Twisted Light into and out of a Photonic Chip

Chen, Yuan; Gao, Jun; Jiao, Zhi-Qiang; Sun, Kaihua; Shen, Wei-Guan; Qiao, Lu-Feng; Tang, Hao; Lin, Xiaofeng; Jin, Xian

doi:10.1103/physrevlett.121.233602

Cited by 72 publications

(49 citation statements)

References 33 publications

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“…Finally, although the OAM of light constitutes a natural basis for high-dimensional states, it is very challenging to manipulate on integrated devices, thus it is mainly exploited in bulk optics experiments. Nonetheless, noteworthy results that might open the doors to integrated devices exploiting OAM have been achieved [106,107,138,143].…”

Section: Integrated Platformsmentioning

confidence: 99%

High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges

et al. 2019

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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 capacity and increased noise resilience, to novel fundamental research possibilities in quantum physics. Multiple photonic degrees of freedom have been explored to generate high‐dimensional quantum states, both with bulk optics and integrated photonics. Furthermore, these quantum states have been propagated through various channels, for example, free‐space links, single‐mode, multicore, and multimode fibers, and also aquatic channels, experimentally demonstrating the theoretical advantages over 2D systems. Here, the state‐of‐the‐art on the generation, propagation, and detection of high‐dimensional quantum states is reviewed. Quantum communication with states living in d‐dimensional Hilbert spaces, qudits, yields great benefits. However, qudits generation, transmission, and detection is not a simple task to accomplish. This review presents the state‐of‐the‐art on the generation, propagation, and measurement of high‐dimensional quantum states, highlighting their advantages, issues, and future perspectives.

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Section: Integrated Platformsmentioning

confidence: 99%

High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges

et al. 2019

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“…By entering the strong coupling regime with tunable cooperativity, photon trains of on‐demand quantum bunching could be realized . Another merit of open‐access microcavities that should not be ignored is the higher‐order transverse modes carrying OAM which, if integrated with quantum emitters, might be essential for realizing qubits with high degrees of freedom . For the investigation of collective behavior of photons and polaritons, the flexible shape design of the concave mirror with high accuracy allowed by the FIB milling gives rise to the advantage of sculpturing photonic potentials.…”

Section: Discussionmentioning

confidence: 99%

Tunable Open‐Access Microcavities for Solid‐State Quantum Photonics and Polaritonics

Cai

et al. 2019

Adv Quantum Tech

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Optical microcavities are powerful platforms widely applied in quantum information and integrated photonic circuits, among which the open‐access microcavity is a newly emerging cavity structure consisting of a micro‐sized concave mirror and a planar mirror controlled individually by groups of nanopositioners, whilst light emitters can be grown or transferred at the antinode of the cavity optical modes. Compared with monolithic microcavities, the open‐access microcavity enables the simultaneous realization of small mode volume, large‐range tunability, flexible structural engineering, and easiness for integration with external emitters, exhibiting extensive applications in the fields of solid‐state quantum photonics and polaritonics over the last decade. This review first introduces the basic theory and the construction methods of open‐access microcavities, followed by the recent advances of their applications in exciton‐polaritons, photon condensates, quantum light sources, and nanoparticle sensing.

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“…However, the current MCF shows inhomogeneity along the fiber length, which hinders complete entanglement protection by geometric alignment or DGD compensation by core permutation through sequential offset splicings as in Ref. [28]. Therefore, the accumulated inhomogeneous DGD has to be kept smaller than the coherence length of photons.…”

Section: B Entanglement Distributionmentioning

confidence: 97%

“…This is worth pursuing since experiments in classical communications show that several modes can be simultaneously supported [102,103], although MIMO detection was still required, so better mode isolation will be needed for QC experiments. By far most OAM based experiments have resorted to bulk-optics-based mode sorters, although recent results open up a new path towards integration for OAM [28,52]. FMFs also need to be studied in this regard, to verify their ability to coherently propagate superpositions of linearly polarised modes over long distances.…”

Section: Outlook and Open Challengesmentioning

confidence: 99%

“…Of particular interest, for instance, is the strategy that relies on encoding a quantum system in terms of the transverse optical modes available, which provides versatility to define high-dimensional Hilbert spaces [19][20][21][22][23][24]. It has already been proven to be useful for QIP with photonic integrated circuits [17,[25][26][27][28], aimed at improving the robustness and compactness of experimental setups. However, remarkably, propagation over optical fibres for such quantum states has been a major challenge due to the fact that many optical fibres are designed to support only the fundamental gaussian propagation mode.…”

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Quantum information processing with space-division multiplexing optical fibres

2020

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The optical fibre is an essential tool for our communication infrastructure since it is the main transmission channel for optical communications. The latest major advance in optical fibre technology is spatial division multiplexing (SDM), where new fibre designs and components establish multiple co-existing data channels based on light propagation over distinct transverse optical modes. Simultaneously, there have been many recent developments in the field of quantum information processing (QIP), with novel protocols and devices in areas such as computing, communication and metrology. Here, we review recent works implementing QIP protocols with SDM optical fibres, and discuss new possibilities for manipulating quantum systems based on this technology.Quantum information processing (QIP) is a field that has seen tremendous growth over the many years since Richard Feynman's seminal talk on the use of quantum computers to simulate physical systems [1]. When information bits are encoded on individual or entangled quantum states, a gain over traditional systems can be seen for some information processing tasks. A famous example is the well-known Shor's algorithm for prime number factorisation running on a quantum computer, where an impressive reduction in resources is obtained when compared to classical algorithms [2]. Another major application of QIP is in communication security, where the fact that unknown quantum states cannot be faithfully cloned [3] is exploited to detect the presence of an eavesdropper. This concept was used as the core foundation behind quantum key distribution (QKD), a communication protocol designed to distribute random private keys among remote parties [4,5]. As the first application to showcase in practice the benefits of QIP, QKD has experienced huge development ever since [6][7][8]. QKD is part of a more general family of protocols called quantum communications (QC), which includes other schemes such as quantum teleportation and entanglement swapping [9], aiming to be the communication backbone supporting future networks of quantum computers [10].During the last decades a number of technological features were developed by the telecommunication community in order to support the continuous increase in demand for more transmission bandwidth over a communication channel. These developments have been motivated by several applications that have cropped up along the years, from the internet to social networking and high-quality on-demand video streaming. Arguably the optical fibre has played a major role in the success of the telecommunication infrastructure, mainly due to its high transparency and highbandwidth support [11]. Technologies such as wavelength division multiplexing (WDM) [12], and the erbium doped fibre amplifier (EDFA) [13,14] have been major catalysts to the extremely high capacities and ultra-long transmission distances available today. The latest technological drive towards maintaining the bandwidth growth is called spatial division multiplexing (SDM), and it consists of employi...

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Mapping Twisted Light into and out of a Photonic Chip

Cited by 72 publications

References 33 publications

High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges

High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges

Tunable Open‐Access Microcavities for Solid‐State Quantum Photonics and Polaritonics

Quantum information processing with space-division multiplexing optical fibres

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