Outputs (7)

Quantum reflection of bright solitary matter waves from a narrow attractive potential (2016)
Journal Article
Marchant, A., Billam, T., Yu, M., Rakonjac, A., Helm, J., Polo, J., Weiss, C., Gardiner, S., & Cornish, S. (2016). Quantum reflection of bright solitary matter waves from a narrow attractive potential. Physical Review A, 93(2), Article 021604(R). https://doi.org/10.1103/physreva.93.021604

We report the observation of quantum reflection from a narrow attractive potential using bright solitary matter waves formed from a Rb 85 Bose-Einstein condensate. We create the attractive potential using a tightly focused, red-detuned laser beam, an... Read More about Quantum reflection of bright solitary matter waves from a narrow attractive potential.

Superballistic center-of-mass motion in one-dimensional attractive Bose gases: Decoherence-induced Gaussian random walks in velocity space (2016)
Journal Article
Weiss, C., Cornish, S., Gardiner, S., & Breuer, H.-P. (2016). Superballistic center-of-mass motion in one-dimensional attractive Bose gases: Decoherence-induced Gaussian random walks in velocity space. Physical Review A, 93(1), Article 103605. https://doi.org/10.1103/physreva.93.013605

We show that the spreading of the center-of-mass density of ultracold attractively interacting bosons can become superballistic in the presence of decoherence, via one-, two-, and/or three-body losses. In the limit of weak decoherence, we analyticall... Read More about Superballistic center-of-mass motion in one-dimensional attractive Bose gases: Decoherence-induced Gaussian random walks in velocity space.

From short-time diffusive to long-time ballistic dynamics: The unusual center-of-mass motion of quantum bright solitons (2015)
Journal Article
Weiss, C., Gardiner, S., & Breuer, H. (2015). From short-time diffusive to long-time ballistic dynamics: The unusual center-of-mass motion of quantum bright solitons. Physical Review A, 91(6), Article 063616. https://doi.org/10.1103/physreva.91.063616

Brownian motion is ballistic on short time scales and diffusive on long time scales. Our theoretical investigations indicate that one can observe the exact opposite—an “anomalous diffusion process” where initially diffusive motion becomes ballistic o... Read More about From short-time diffusive to long-time ballistic dynamics: The unusual center-of-mass motion of quantum bright solitons.

Splitting bright matter-wave solitons on narrow potential barriers: Quantum to classical transition and applications to interferometry (2014)
Journal Article
Helm, J., Rooney, S., Weiss, C., & Gardiner, S. (2014). Splitting bright matter-wave solitons on narrow potential barriers: Quantum to classical transition and applications to interferometry. Physical Review A, 89(3), Article 033610. https://doi.org/10.1103/physreva.89.033610

We study bright solitons in the Gross-Pitaevskii equation as they are split and recombined in a low-energy system. We present analytic results determining the general region in which a soliton may not be split on a potential barrier and confirm these... Read More about Splitting bright matter-wave solitons on narrow potential barriers: Quantum to classical transition and applications to interferometry.

Phase-matching condition for enhanced entanglement of colliding indistinguishable quantum bright solitons in a harmonic trap (2014)
Journal Article
Holdaway, D., Weiss, C., & Gardiner, S. (2014). Phase-matching condition for enhanced entanglement of colliding indistinguishable quantum bright solitons in a harmonic trap. Physical Review A, 89(1), Article 013611. https://doi.org/10.1103/physreva.89.013611

We investigate finite number effects in collisions between two states of an initially well defined number of identical bosons with attractive contact interactions, oscillating in the presence of harmonic confinement in one dimension. We investigate t... Read More about Phase-matching condition for enhanced entanglement of colliding indistinguishable quantum bright solitons in a harmonic trap.

Collision dynamics and entanglement generation of two initially independent and indistinguishable boson pairs in one-dimensional harmonic confinement (2013)
Journal Article
Holdaway, D., Weiss, C., & Gardiner, S. (2013). Collision dynamics and entanglement generation of two initially independent and indistinguishable boson pairs in one-dimensional harmonic confinement. Physical Review A, 87(4), Article 043632. https://doi.org/10.1103/physreva.87.043632

We investigate finite-number effects in collisions between two states of an initially well-known number of identical bosons with contact interactions, oscillating in the presence of harmonic confinement in one dimension. We investigate two N/2 (inter... Read More about Collision dynamics and entanglement generation of two initially independent and indistinguishable boson pairs in one-dimensional harmonic confinement.

Quantum theory of bright matter-wave solitons in harmonic confinement (2012)
Journal Article
Holdaway, D., Weiss, C., & Gardiner, S. (2012). Quantum theory of bright matter-wave solitons in harmonic confinement. Physical Review A, 85(5), Article 053618. https://doi.org/10.1103/physreva.85.053618

This paper investigates bright quantum-matter-wave solitons beyond the Gross-Pitaevskii equation (GPE). As proposals for interferometry and creating nonlocal quantum superpositions have been formed, it has become necessary to investigate effects not... Read More about Quantum theory of bright matter-wave solitons in harmonic confinement.