Poster Session

Poster Session I (4pm-6pm CDT)

4:00 pm – 6:00 pm, Tuesday June 4 // Session D00

Topics:

Suppression of Quasi-long-range Order in One-Dimensional Spin-Orbit-Coupled Bose Gases

Poster 106

Presenter: Shih-Wen Feng (Purdue University)

Authors: Chuan-Hsun Li (Purdue University), Felicia Martinez (Purdue University), Qi Zhou (Purdue University), Yong Chen (Purdue University)

The coherence of a quantum system is one of the key signatures of many-body physics. Unlike three-dimensional Bose-Einstein Condensates, which have true long-range coherence, for Bose gases confined in a one-dimensional (1D) potential, the coherence has quasi-long-range order, revealing a characteristic property of superfluid. We experimentally show that the quasi-long-range coherence of 1D Bose gases can be suppressed by applying 1D synthetic spin-orbit coupling (SOC), which is generated by a pair of counter-propagating Raman beams. This suppression is demonstrated by analyzing the one-body correlation function. By varying the coupling strength of SOC towards a critical value, we observe a transformation from power-law decay of the one-body correlation function, indicating quasi-long-range order of the system, to exponential decaying form.

Funding acknowledgement

NSF Grants No. PHY-2012185

POSTERS (157)