Order-Disorder Oscillations in Exciton-Polariton Superfluids

Saito, Hiroki; Aioi, Tomohiko; Kadokura, Tsuyoshi

doi:10.1103/physrevlett.110.026401

Cited by 27 publications

(28 citation statements)

References 30 publications

(36 reference statements)

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“…The strong coupling of spins to SC-resonators [26][27][28][29] as well as the full hybrid quantum architecture has recently been demonstrated [30,31]. The exploration of hybrid systems based on Er 3+ :Y 2 SiO 5 (Er:YSO) crystals coupled to SC resonators has started successfully [23,32].…”

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confidence: 99%

Strong coupling of anEr3+-dopedYAlO3crystal to a superconducting resonator

et al. 2014

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Quantum memories are integral parts of both quantum computers and quantum communication networks. Naturally, such a memory is embedded into a hybrid quantum architecture, which has to meet the requirements of fast gates, long coherence times and long distance communication. Erbium doped crystals are well suited as a microwave quantum memory for superconducting circuits with additional access to the optical telecom C-band around 1.55 µm. Here, we report on circuit QED experiments with an Er 3+ :YAlO3 crystal and demonstrate strong coupling to a superconducting lumped element resonator. The low magnetic anisotropy of the host crystal allows for attaining the strong coupling regime at relatively low magnetic fields, which are compatible with superconducting circuits. In addition, Ce 3+ impurities were detected in the crystal, which showed strong coupling as well.PACS numbers: 42.50. Fx, 76.30.Kg, 03.67.Hk, 03.67.Lx, Reliable operation of quantum information and communication protocols requires a quantum memory (QM), i.e. a system, which allows for storage and on-demand retrieval of a quantum bit [1,2]. This can be realized by a great variety of physical systems such as single trapped ions [3], atoms [4], single spins [5], two-level defects [6] and spin-ensembles [7], which differ by their frequency band, coherence time and operating conditions. Rare-earth (RE) ions doped into a solid represent one of most promising systems suitable for quantum memories, because their inner shell 4f optical electronic transitions possess very long coherence times [8]. The excellent optical properties of RE doped crystals are confirmed and harvested by the world wide research in quantum optics. This includes a light-matter interface at the single photon level [9], an efficient and broadband quantum memory for light [10,11], a quantum memory at the telecom Cband [12], an atomic frequency comb memory [13], storage of entanglement in a RE doped crystal [14] and generation of entanglement between two crystals [15]. Yet, in contrast to the single atom approach, a quantum memory based on RE doped solids allows for the implementation of multimode storage protocols [16,17].There are seven RE's ions (Ce 3+ , Nd 3+ , Sm 3+ , Gd 3+ , Dy 3+ , Er 3+ , Yb 3+ ), which are suited for a microwave quantum memory due to the presence of a large electronic spin associated with an unquenched orbital moment [18]. Most of them have access to the nuclear spin degrees of freedom, which allow for long term storage [19]. These RE ions can be doped into a variety of host crystals, and therefore, can potentially be integrated with superconducting (SC) quantum circuits [20]. The resulting hybrid quantum system can consist of a SC qubit, a transmission line or a resonator magnetically coupled to the spin ensemble [21]. The exclusive feature of some RE ions (Nd 3+ , Er 3+ , Yb 3+ ) is the presence of optical transitions inside standard telecommunication bands. A quantum memory based on these RE elements can be very attractive for quantum communication between qubits...

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confidence: 99%

Strong coupling of anEr3+-dopedYAlO3crystal to a superconducting resonator

et al. 2014

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“…Along with other classical issues of nonlinear dynamics, recently the formation of periodic patterns was studied in polaritonic systems, too [17][18][19][20]. In Refs.…”

Section: Introductionmentioning

confidence: 99%

“…In Refs. [17][18][19] the pattern dynamics of spinless exciton-polaritons was investigated. Unlike those works, the influence of the exciton spin on the pattern dynamics is in the focus of the present contribution.…”

Section: Introductionmentioning

confidence: 99%

Pseudospin dynamics of exciton-polariton patterns in a coherently driven semiconductor microcavity

2014

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The influence of the exciton spin on the formation and stability properties of periodic cavity polariton patterns is studied in a semiconductor microcavity operating in the strong-coupling regime. A linearly polarized optical beam excites polaritons formed by excitons with different spin orientations and left-and right-circularly polarized photons. The perturbation analysis of homogeneous solutions reveals a competition between these two spin states. The outcome of this competition is determined by the sign of the cross-phase modulation parameter. In particular, it is shown that linearly polarized patterns are preferred, if this parameter is positive. Otherwise, a spontaneous symmetry-breaking instability leads to the formation of transverse patterns with a spatial polarization asymmetry. In the regime of bistable homogeneous solutions we observe the spontaneous formation of domains framed by one-dimensional dark half solitons.

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“…At the same time, due to their excitonic component, microcavity polaritons interact much stronger than pure photons in typical photonic setups, and thus represent a competitive and promising platform for ultrafast signal processing applications. Indeed, a range of fundamental nonlinear effects has been investigated with microcavity polaritons, including low threshold bistability [7,8], polarization multi-stability and switching [9][10][11], parametric scattering and pattern formation [12][13][14][15][16], excitation of dark- [17][18][19][20][21] and brigth solitons [22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Dark solitons and vortices in the intrinsic bistability regime in exciton polariton condensates

Yulin¹,

Skryabin²,

Gorbach³

2015

Phys. Rev. B

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We investigate a new kind of dark solitons and vortices that can exist in the exciton-polariton condensates. These structures have discontinuity in the excitonic part of the polaritonic field and exist due to an intrinsic multiplicity of the solutions for the exciton density in the given optical field. Reported solutions are characterized by two very distinct localization scales, and hence are coined as dual-core dark solitons and vortices.

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Order-Disorder Oscillations in Exciton-Polariton Superfluids

Cited by 27 publications

References 30 publications

Strong coupling of anEr3+-dopedYAlO3crystal to a superconducting resonator

Strong coupling of anEr3+-dopedYAlO3crystal to a superconducting resonator

Pseudospin dynamics of exciton-polariton patterns in a coherently driven semiconductor microcavity

Dark solitons and vortices in the intrinsic bistability regime in exciton polariton condensates

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