Revealing novel quantum phases in Bosons in an optical lattice with frustration

• Project/Area Number: 21740267
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Kinki University
• Principal Investigator: KASAMATSU Kenichi 近畿大学, 理工学部, 講師 (70413763)
• Project Period (FY): 2009 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: ボースアインシュタイン凝縮 / 超流動 / 冷却原子 / 量子渦 / 光格子 / 相転移 / フラストレーション / ボースアインシュタン凝縮

Research Abstract

We study emergence of novel quantum phases and their dynamical properties in ultracold gases of atoms in an optical lattice with rotation or frustration. We consider the vortex formation of a Bose-Einstein condensates in an optical lattice and analyze the relevant experimental results done by a group of Oxford university. We also study phase structures of bosons in an optical lattice using the generalized frustrated XY model.

Research Products

• [Journal Article] Tachyon Condensation and Brane Annihilation in Bose-Einstein Condensates: Spontaneous Symmetry Breaking in Restricted Lower-Dimensional Subspace (2013)
  • Author(s): Hiromitsu Takeuchi, et al.
  • Journal Title: Journal of Low Temperature Physics Volume: 171 Issue: 3-4 Pages: 443-454
  • DOI: 10.1007/s10909-012-0816-z
  • Peer Reviewed
• [Journal Article] Tachyon condensation due to domain-wall annihilation in Bose-Einstein condensates (2012)
  • Author(s): H. Takeuchi, K. Kasamatsu, M. Tsubota, M. Nitta
  • Journal Title: Physical Review Letters Volume: vol.109 Issue: 24 Pages: 245301-245301
  • DOI: 10.1103/physrevlett.109.245301
  • Peer Reviewed
• [Journal Article] Creating vortons and three-dimensional skyrmions from domain wall annihilation with stretched vorticesin Bose-Einstein condensates (2012)
  • Author(s): M. Nitta, K. Kasamatsu, M. Tsubota, and H. Takeuch
  • Journal Title: Physical Review A Volume: vol.85 Issue: 5 Pages: 53639-53639
  • DOI: 10.1103/physreva.85.053639
  • Peer Reviewed
• [Journal Article] Finite temperature phase structureof hard-core bosons in an optical lattice with an effective magnetic field (2012)
  • Author(s): Y. Nakano, K. Kasamatsu, T. Matsui
  • Journal Title: Physical Review A Volume: vo1.85 Issue: 2
  • DOI: 10.1103/physreva.85.023622
  • Peer Reviewed
• [Journal Article] Dynamical properties of bosons in an optical lattice with a synthetic magnetic field (2012)
  • Author(s): Kenichi Kasamatsu, et al.
  • Journal Title: Journal of Physics: Conference Series Volume: 400 Issue: 1 Pages: 012026-012026
  • DOI: 10.1088/1742-6596/400/1/012026
  • Peer Reviewed
• [Journal Article] Vortex formation of a Bose-Einstein condensate in a rotating deep optical lattice (2011)
  • Author(s): A. Kato, Y. Nakano, K. Kasamatsu, T. Matsui
  • Journal Title: Physical Review A Volume: vo1.84 Issue: 5
  • DOI: 10.1103/physreva.84.053623
  • Peer Reviewed
• [Journal Article] Scalable Neutral Atom Quantum Computer with Interaction on Demand: Proposal for Selective Application of Two-Qubit Gate (2011)
  • Author(s): E. H. Lapasar, K. Kasamatsu, Y. Kondo, M. Nakahara, T. Ohmi
  • Journal Title: Journal of Physical Society of Japan Volume: vol.80 Issue: 11 Pages: 1140031-10
  • DOI: 10.1143/jpsj.80.114003
  • Peer Reviewed
• [Journal Article] Interaction of half-quantized vortices in two-component Bose-Einstein condensates (2011)
  • Author(s): M.Eto, K.Kasamatsu, M.Nitta, H.Takeuchi, M.Tsubota
  • Journal Title: Physical Review A Volume: 83 Issue: 6 Pages: 1-8
  • DOI: 10.1103/physreva.83.063603
  • Peer Reviewed
• [Journal Article] Route to turbulence in a trapped Bose‐Einstein condensate (2011)
  • Author(s): J. A. Seman, K. Kasamatsu,他9名
  • Journal Title: Laser Physics Letters, Volume: vol.8 Pages: 691-696
  • Peer Reviewed
• [Journal Article] Route to turbulence in a trapped Bose-Einstein condensate (2011)
  • Author(s): J.A.Seman, K.Kasamatsu, et al
  • Journal Title: Laser Physics Letters Volume: 8 Pages: 691-696
  • Peer Reviewed
• [Journal Article] Crossover between Kelvin-Helmholtz and counter-superflow instabilities in two-component Bose-Einstein condensates (2010)
  • Author(s): N. Suzuki, H. Takeuchi, K. Kasamatsu, M. Tsubota and H. Saito
  • Journal Title: Physical Review A Volume: vol.82 Issue: 6 Pages: 63604-63604
  • DOI: 10.1103/physreva.82.063604
  • URL: http://link.aps.org/doi/10.1103/PhysRevA.82.063604
  • Peer Reviewed
• [Journal Article] Analogues of D-branes in Bose-Einstein condensates (2010)
  • Author(s): K. Kasamatsu, H. Takeuchi, M. Nitta, and M. Tsubota
  • Journal Title: Journal of High Energy Physics Volume: vol.11 Issue: 11
  • DOI: 10.1007/jhep11(2010)068
  • Peer Reviewed
• [Journal Article] Analogues of D-branes in Bose-Einstein condensates (2010)
  • Author(s): K.Kasamatsu, H.Takeuchi, et al.
  • Journal Title: Journal of High Energy Physics Volume: 11
  • Peer Reviewed
• [Journal Article] Crossover between Kelvin-Helmholtz and counter-superflow instabilities in two-component Bose-Einstein condensates (2010)
  • Author(s): N.Suzuki, H.Takeuchi, K.Kasamatsu, et al.
  • Journal Title: Physical Review A Volume: 82
  • Peer Reviewed
• [Journal Article] Vortex Formations from Domain Wall Annihilations in Two-Component Bose-Einstein Condensates (2010)
  • Author(s): H.Takeuchi, K.Kasamatsu, et al.
  • Journal Title: J.Low Temperature Physics Volume: 162 Pages: 243-249
  • Peer Reviewed
• [Journal Article] Connection of Vortices between Spatially Different Phases in Two-Component Bose-Einstein Condensates (2010)
  • Author(s): K.Kasamatsu, H.Takeuchi et.al
  • Journal Title: Journal of Low Temperature Physics 158 Pages: 99-104
  • Peer Reviewed
• [Journal Article] Shear-flow Instability in Two-component Bose-Einstein condensates (2010)
  • Author(s): H.Takeuchi, K.Kasamatsu, et.al
  • Journal Title: Journal of Low Temperature Physics 158 Pages: 384-390
  • Peer Reviewed
• [Journal Article] Quantum Kelvin-Helmholtz instability in phase-separated two-component Bose-Einstein condensates (2010)
  • Author(s): H.Takeuchi, K.Kasamatsu, et.al
  • Journal Title: Physical Review B 81
  • Peer Reviewed
• [Presentation] 光格子中の冷却原子系-U(1)格子ゲージ理論対応とゲージ対称性の破れ (2013)
  • Author(s): 笠松健一, 一瀬郁夫, 松居哲生
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
  • Year and Date: 2013-03-29
• [Presentation] 有効磁場下における光格子中のハードコアボソン系の相構造 (2012)
  • Author(s): 笠松健一, 中野勇気, 松居哲生
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-26
• [Presentation] 有効磁場下における光格子中のハードコアボソン系の相構造 (2012)
  • Author(s): 笠松健一、中野勇気、松居哲生
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学(兵庫県)
  • Year and Date: 2012-03-26
• [Presentation] Finite temperature phase structures of hard-core bosons in an optical lattice with a synthetic magnetic field (2012)
  • Author(s): K. Kasamatsu, Y. Nakano, and T. Matsui
  • Organizer: MAR12 Meeting of The American Physical Society
  • Place of Presentation: ボストンアメリカ合衆国
  • Year and Date: 2012-02-29
• [Presentation] Finite temperature phase structures of hard-core bosons in an optical lattice with a synthetic magnetic field (2012)
  • Author(s): K.Kasamatsu, Y.Nakano, T.Matsui
  • Organizer: MAR12 Meeting of The American Physical Society
  • Place of Presentation: Boston convention center(アメリカボストン)
  • Year and Date: 2012-02-29
• [Presentation] Simulating brane–anti-brane annihilation in Bose-Einstein condensates (2012)
  • Author(s): Kenichi Kasamatsu, et al.
  • Organizer: The 23rd International Conference on Atomic Physics ICAP 2012
  • Place of Presentation: Paris, France
• [Presentation] Tachyon Condensation and Brane Annihilation in Bose-Einstein Condensates: Spontaneous Symmetry Breaking in a Lower-dimensional Subspace (2012)
  • Author(s): Hiromitsu. Takeuchi, et al.
  • Organizer: International Symposium on Quantum Fluids and Solids 2012
  • Place of Presentation: Lancaster University, UK
• [Presentation] Vortons and 3D skyrmions from domain wall pair annihilations in BECs (2012)
  • Author(s): Muneto Nitta, et al
  • Organizer: International Symposium on Quantum Fluids and Solids 2012
  • Place of Presentation: Lancaster University, UK
• [Presentation] ボース凝縮体におけるDブレーンソリトンの構造 (2012)
  • Author(s): 笠松健一
  • Organizer: 日本物理学会 2012年秋季大会
  • Place of Presentation: 横浜国立大学
• [Presentation] ボース・アインシュタイン凝縮におけるタキオン凝縮；空間的に局在した自発的対称性の破れ (2012)
  • Author(s): 竹内宏光
  • Organizer: 日本物理学会 2012年秋季大会
  • Place of Presentation: 横浜国立大学
• [Presentation] タキオン凝縮のトポロジー的側面：ドメイン壁対消滅によるボルトン生成 (2012)
  • Author(s): 新田宗土
  • Organizer: 日本物理学会 2012年秋季大会
  • Place of Presentation: 横浜国立大学
• [Presentation] Dynamical properties of bosons in an optical lattice with a synthetic magnetic field (2011)
  • Author(s): K. Kasamatsu, A. Kato, Y. Nakano, and T. Matsui
  • Organizer: 26th International Conference on Low Temperature Physics
  • Place of Presentation: 北京、中国
  • Year and Date: 2011-08-12
• [Presentation] Dynamical properties of bosons in an optical lattice with a synthetic magnetic field (2011)
  • Author(s): K.Kasamatsu, A.Kato, Y.Nakano, T.Matsui
  • Organizer: 26th International Conference on Low Temperature Physics
  • Place of Presentation: 北京国際会議センター(中国北京)
  • Year and Date: 2011-08-11
• [Presentation] Selective Application of Two-Qubit Gate in Neutral Atom Quantum Computer (2011)
  • Author(s): E. H. Lapasar, K. Kasamatsu, Y. Kondo, M. Nakahara, T. Ohmi
  • Organizer: 日本物理学会 第66回年次大会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-27
• [Presentation] Scalable Neutral Atom Quantum Computer with Interaction on Demand (2011)
  • Author(s): M. Nakahara, E. H. Lapasar, K. Kasamatsu, T. Ohmi, Y. Kondo
  • Organizer: MARIl Meeting of The American Physical Society
  • Place of Presentation: ダラス アメリカ合衆国
  • Year and Date: 2011-03-27
• [Presentation] 有効磁場下における光格子中のハードコアボソン系のダイナミクス (2011)
  • Author(s): 中野勇気, 加藤昌, 笠松健一, 松居哲生
  • Organizer: 日本物理学会 第66回年次大会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-26
• [Presentation] 深い2次元光格子中のボース凝縮体における渦形成 (2011)
  • Author(s): 加藤昌, 中野勇気, 笠松健一, 松居哲生
  • Organizer: 日本物理学会 第66回年次大会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-26
• [Presentation] 有効磁場下における光格子中のハードコアボソン系の相図 (2010)
  • Author(s): 中野勇気, 笠松健一, 松居哲生
  • Organizer: 日本物理学会 2010年秋季大会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-26
• [Presentation] 振動ポテンシャル中のボース凝縮体における量子渦生成の機構 (2010)
  • Author(s): 笠松健一, 小林未知数, 坪田誠
  • Organizer: 日本物理学会 2010年秋季大会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-25
• [Presentation] 有効磁場中の光格子ハードコアボソン系の相構造 (2010)
  • Author(s): 中野勇気, 笠松健一, 松居哲生
  • Organizer: 日本物理学会 第65回年次大会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-09-22
• [Presentation] Soliton and vortex generation in Bose-Einstein condensates under oscillatory excitations (2010)
  • Author(s): K.Kasamatsu, M.Kobayashi, et al
  • Organizer: International Symposium on Quantum Fluids and Solids 2010
  • Place of Presentation: Grenoble, France
  • Year and Date: 2010-08-06
• [Presentation] 回転 Bose 凝縮体の渦格子形成における数値精度依存性と散逸の効果 (2010)
  • Author(s): 笠松健一, 他
  • Organizer: 日本物理学会 第65回年次大会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-21
• [Presentation] 原子気体ボースアインシュタイン凝縮体における量子渦に関する研究 (2010)
  • Author(s): 笠松健一
  • Organizer: 日本物理学会 第65回年次大会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-21
• [Presentation] 原子気体BECの量子渦 (2009)
  • Author(s): 笠松健一
  • Organizer: 日本物理学会 2009年秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-27
• [Book] Novel Superfluids Volume 1 (ed. K. Bennemann and J B. Ketterson, Oxford Univ. Press) (2013)
  • Author(s): Makoto Tsubota, et al.
  • Publisher: Quantized vortices in superfluid helium and atomic Bose-Einstein condensates
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