On-Demand Storage of Photonic Qubits at Telecom Wavelengths

Liu, Duan-Cheng; Li, Pei-Yun; Zhu, Tianli; Zheng, Liang; Huang, Jianyin; Zhou, Zong‐Quan; Li, Chuan‐Feng; Guo, Guang‐Can

doi:10.1103/physrevlett.129.210501

Cited by 26 publications

(22 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, this system was used for coherent storage of bright pulses with a storage time > 1 h [34] with the atomic frequency comb (AFC) protocol [35]. Furthermore, recent advances towards developing such QMs with built-in fibre couplers [43,44] would enable enhanced coupling between the optical free space and memory modes.…”

Section: Memory Architecturementioning

confidence: 99%

Time-delayed single quantum repeater node for global quantum communications with a single satellite

Gündoğan¹,

Sidhu²,

Oi³

et al. 2023

Preprint

View full text Add to dashboard Cite

Quantum networking on a global scale is an immensely challenging endeavor that is fraught with significant technical and scientific obstacles. While various types of quantum repeaters have been proposed they are typically limited to distances of a few thousand kilometers or require extensive hardware overhead. Recent proposals suggest that space-borne quantum repeaters composed of a small number of satellites carrying on-board quantum memories would be able to cover truly global distances. In this paper, we propose an alternative to such repeater constellations using an ultra-long lived quantum memory in combination with a second memory with a shorter storage time. This combination effectively acts as a time-delayed version of a single quantum repeater node. We investigate the attainable finite key rates and demonstrate an improvement of at least three orders of magnitude over prior single-satellite methods that rely on a single memory, while simultaneously reducing the necessary memory capacity by the same amount. We conclude by suggesting an experimental platform to realize this scheme.

show abstract

Section: Memory Architecturementioning

confidence: 99%

Time-delayed single quantum repeater node for global quantum communications with a single satellite

Gündoğan¹,

Sidhu²,

Oi³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Substantial efforts have been devoted to manufacturing on-chip storage devices through various methods, such as Ti 4+ in-diffusion (18,19), focused ion beam milling (20), and femtosecond laser micromachining (FLM) (21). On the basis of devices from these methods, photonics quantum memories have already demonstrated in different systems (22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39). Recently, erbium ion-doped waveguides, thanks to the optical translation of 4 I 15/2 ↔ 4 I 13/2 at telecom band, have been used to realize integrated quantum memory at 1.5-μm wavelength (24)(25)(26)(27)(40)(41)(42).…”

Section: Introductionmentioning

confidence: 99%

“…On the basis of devices from these methods, photonics quantum memories have already demonstrated in different systems (22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39). Recently, erbium ion-doped waveguides, thanks to the optical translation of 4 I 15/2 ↔ 4 I 13/2 at telecom band, have been used to realize integrated quantum memory at 1.5-μm wavelength (24)(25)(26)(27)(40)(41)(42). Toward a quantum repeater with large capacity, on-chip quantum memories with broadband (22)(23)(24)29) and multimode (26,(29)(30)(31) properties have been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

“…Toward a quantum repeater with large capacity, on-chip quantum memories with broadband (22)(23)(24)29) and multimode (26,(29)(30)(31) properties have been demonstrated. For practical integrated quantum memory, an effective method is to develop fiber-integrated quantum storage chips (25,37), which can directly interconnect to current fiber system, thus facilitating the use of integrated devices in quantum networks. To date, such a fiber-integrated quantum storage chip with multimode capacity at telecom band has yet been demonstrated, especially a broadband storage of nonclassical light, which is a key step toward large-scale high-rate quantum networks compatible with existing telecom infrastructure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Telecom-band–integrated multimode photonic quantum memory

Zhang

Wei

et al. 2023

Sci. Adv.

View full text Add to dashboard Cite

Telecom-band–integrated quantum memory is an elementary building block for developing quantum networks compatible with fiber communication infrastructures. Toward such a network with large capacity, an integrated multimode photonic quantum memory at telecom band has yet been demonstrated. Here, we report a fiber-integrated multimode quantum storage of single photon at telecom band on a laser-written chip. The storage device is a fiber-pigtailed Er 3+ :LiNbO 3 waveguide and allows a storage of up to 330 temporal modes of heralded single photon with 4-GHz-wide bandwidth at 1532 nm and a 167-fold increasing of coincidence detection rate with respect to single mode. Our memory system with all-fiber addressing is performed using telecom-band fiber-integrated and on-chip components. The results represent an important step for the future quantum networks using integrated photonics devices.

show abstract

“…Both CSSP pulses and FSSP pulses have been commonly used in storage experiments [60,61]. The dynamics of a nonlinear scatter exhibit very different features under these two types of quantum pulses [53,62,63].…”

Section: Introductionmentioning

confidence: 99%

Limits of single-photon storage in a single $Λ$-type atom

Zhang¹,

Yang²

2023

Preprint

View full text Add to dashboard Cite

We theoretically investigate the limits of single-photon storage in a single Λ-type atom, specifically the tradeoff between storage efficiency and storage speed. We show that a control field can accelerate the storage process without degrading efficiency too much. However, the storage speed is ultimately limited by the total decay rate of the involved excited state. For a single-photon pulse propagating in a regular one-dimensional waveguide, the storage efficiency has an upper limit of 50%. Perfect single-photon storage can be achieved by using a chiral waveguide or the Sagnac interferometry. By comparing the storage efficiencies of Fock-state and coherent-state pulses, we reveal the influence of quantum statistics of light on photon storage at the single-photon level. II. MASTER EQUATIONS FOR A Λ-TYPE ATOM DRIVEN BY A QUANTUM PULSERecently, substantial efforts have been devoted to investigating the scattering of propagating quantum pulses by a local quantum system [25,[49][50][51][52]. A systematic master-equation approach has been developed to handle the dynamics the local quantum scatter [53][54][55]. The input-output relation has

show abstract

On-Demand Storage of Photonic Qubits at Telecom Wavelengths

Cited by 26 publications

References 47 publications

Time-delayed single quantum repeater node for global quantum communications with a single satellite

Time-delayed single quantum repeater node for global quantum communications with a single satellite

Telecom-band–integrated multimode photonic quantum memory

Limits of single-photon storage in a single $Λ$-type atom

Contact Info

Product

Resources

About