# A stripe phase with supersolid properties in spin–orbit-coupled Bose–Einstein condensates

@article{Li2017ASP, title={A stripe phase with supersolid properties in spin–orbit-coupled Bose–Einstein condensates}, author={Jun-Ru Li and Jeongwon Lee and Wujie Huang and Sean Burchesky and Boris Shteynas and Furkan Cagri Top and Alan O. Jamison and Wolfgang Ketterle}, journal={Nature}, year={2017}, volume={543}, pages={91-94} }

Supersolidity combines superfluid flow with long-range spatial periodicity of solids, two properties that are often mutually exclusive. The original discussion of quantum crystals and supersolidity focused on solid 4He and triggered extensive experimental efforts that, instead of supersolidity, revealed exotic phenomena including quantum plasticity and mass supertransport. The concept of supersolidity was then generalized from quantum crystals to other superfluid systems that break continuous… Expand

#### 248 Citations

Spin-orbit coupled Bose-Einstein condensates with observation of a stripe phase

- Physics
- 2017

In this work we build a new spin-orbit coupling experiment to observe the supersolidlike stripe phase. The phase diagram of a 1-dimensional spin-orbit coupled BoseEinstein condensate shows several… Expand

Tunable spin-orbit coupling and magnetic superstripe phase in a Bose-Einstein condensate

- Physics
- 2019

Superstripe phases in Bose-Einstein condensates (BECs), possessing both crystalline structure and superfluidity, opens a new avenue for exploring exotic quantum matters---supersolids. However,… Expand

Supersolid phase of a spin-orbit-coupled Bose-Einstein condensate: a perturbation approach

- Physics
- 2021

The phase diagram of a Bose-Einstein condensate with Raman-induced spin-orbit coupling includes a stripe phase with supersolid features. In this work we develop a perturbation approach to study the… Expand

Drag Force and Superfluidity in the Supersolid Stripe Phase of a Spin–Orbit-Coupled Bose–Einstein Condensate

- Physics
- 2018

The phase diagram of a spin–orbit-coupled two-component Bose gas includes a supersolid stripe phase, which is featuring density modulations along the direction of the spin–orbit coupling. This phase… Expand

The low-energy Goldstone mode in a trapped dipolar supersolid

- Physics, Medicine
- Nature
- 2019

Observation of the collective mode responding to the superfluid stiffness—the low-energy Goldstone mode—provides direct evidence for phase rigidity, which is a key signature of supersolidity in an ultracold quantum gas. Expand

Supersolid symmetry breaking from compressional oscillations in a dipolar quantum gas

- Physics, Medicine
- Nature
- 2019

This work demonstrates the breaking of two symmetries owing to the coexisting superfluid and crystal properties of a supersolid, and suggests the presence of two separate quantum phase transitions between the superfluid, supersolid and solid-like configurations. Expand

Quantum depletion and superfluid density of a supersolid in Raman spin-orbit-coupled Bose gases

- Physics
- 2018

We theoretically investigate a three-dimensional weakly interacting Bose gas with one-dimensional Raman-type spin-orbit coupling at zero temperature. By employing an improved ansatz, including… Expand

Pseudo-Goldstone excitations in a striped Bose-Einstein condensate

- Physics
- Physical Review A
- 2021

Significant experimental progress has been made recently for observing long-sought supersolid-like states in Bose-Einstein condensates, where spatial translational symmetry is spontaneously broken by… Expand

Two-dimensional supersolidity in a dipolar quantum gas.

- Medicine, Physics
- Nature
- 2021

The extension of supersolid properties into two dimensions is demonstrated by preparing a supersolid quantum gas of dysprosium atoms on both sides of a structural phase transition similar to those occurring in ionic chains17-20, quantum wires21,22 and theoretically in chains of individual dipolar particles. Expand

Searching for Supersolidity in Ultracold Atomic Bose Condensates with Rashba Spin-Orbit Coupling.

- Physics, Medicine
- Physical review letters
- 2018

A functional integral formulation for the stripe phase of spinor Bose-Einstein condensates with Rashba spin-orbit coupling shows that the supersolid phase is stable against quantum depletion, and extends to finite temperatures to account for interactions between excitations. Expand

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