Experimental setup for the production of ultracold strongly correlated fermionic superfluids of 6Li
DOI:
https://doi.org/10.31349/RevMexFis.66.388Keywords:
Quantum degenerate gases, fermionic superfluidity, Bose-Einstein condensation, laser cooling and trappingAbstract
We present our experimental setup to produce ultracold strongly correlated fermionic superfluids made of a two-component spin-mixture of 6Li atoms. Employing standard cooling techniques, we achieve quantum degeneracy in a single-beam optical dipole trap. Our setup is capable of generating spin-balanced samples at temperatures as low as T/TF = 0.1 containing up to 5 × 10^4 atomic pairs. We can access different superfluid regimes by tuning the interparticle interactions close to a broad magnetic Feshbach resonance. In particular, we are able to explore the crossover from the molecular Bose-Einstein condensate (BEC) to the Bardeen-Cooper-Schrieffer (BCS) superfluid regimes. In the near future, we plan to study different collective excitations in these superfluid samples.
References
C. Pethick and H. Smith, Bose-Einstein condensation in dilute gases, (Cambridge University Press, 2002).
I. Bloch, J. Dalibard and J. Zwerger, Rev. Mod. Phys. 80 (2008) 885.
C. Chin, Rev. Mod. Phys. 82 (2010) 1225.
S. Giorgini, L. P. Pitaevskii and S. Stringari, Rev. Mod. Phys. 80 (2008) 1215.
S. Jochim et al., Science 302 (2003) 2101.
M.W. Zwierlein et al., Phys. Rev. Lett. 91 (2003) 250401.
M.Greiner, C. A. Regal and D.S. Jin, Nature 426 (2003) 537.
T. Bourdel et al., Phys. Rev. Lett. 93 (2004) 050401.
C. Chin et al., Science 305 (2004) 1128.
W. Zwerger, Ed., The BCS-BEC Crossover and the Unitary Fermi Gas. (Lecture Notes in Physics, vol. 836, Springer, 2012).
Q.Chen, J. Stajic, S. Tan and K. Levin, Phys. Rep. 412 (2005) 1.
A. Adams et al., New J. Phys. 14 (2012) 115009.
L. Salasnich, J. Phys.: Conf. Ser. 497 (2014) 012026.
P. van Wyk et al., Phys. Rev. A 97 (2018) 013601.
H. J. Metcalf and P. van der Straten, Laser Cooling and Trap- ping, (Springer, 1999).
R. Grimm, M. Weidemu ̈ller and Y.B. Ovchinnikov, Adv. At. Mol. Opt. Phys. 42 (2000) 95.
A. N. Nesmeyanov, Vapour pressure of the elements, trans- lated and edited by J. I. Carasso ( New York, Academic Press 1963).
D.Das and V. Natarajan, Phys. Rev. A 75 (2007) 052508.
V. S. Letokhov. Saturation spectroscopy. In: Shimoda K. (eds) High-Resolution Laser Spectroscopy. Topics in Applied Physics, vol 13. Springer, Berlin, Heidelberg (1976).
W. Ketterle et al. Making, probing and understanding Bose- Einstein condensates. Proceedings of the International School of Physics “Enrico Fermi” Course CXL, (IOS Press 1999) pp. 67-359.
W. Ketterle and M.W. Zwierlein. Making, probing and under- standing ultracold Fermi gases. Proceedings of the Interna- tional School of Physics “Enrico Fermi”, Course CLXIV, (IOS Press 2008) pp. 95-287.
T. Bergeman, G. Erez and H.J. Metcalf, Phys. Rev. A 35 (1987) 1535.
D.Rio Fernandes et al., Europhys. Lett. 100 (2012) 63001.
A.T. Grier et al., Phys. Rev. A 87 (2013) 063411.
A. Burchianti et al., Phys. Rev. A 90 (2014) 043408.
J. Dalibard and C. Cohen-Tannoudjii, J. Opt. Soc. Am. B 6 (1989) 2023.
A. Aspect et al., Phys. Rev. Lett. 61 (1988) 826.
G. Grynberg and J.-Y. Courtois, Europhys. Lett., 27 (1994) 41.
W. Ketterle and N.J. Van Druten, Adv. Atom. Mol. Opt. Phys. 37 (1996) 181.
S. Giorgini, L.P. Pitaevskii, and S.Stringari, Phys. Rev. A 54, R4633(R) (1996).
C. A. Regal, M. Greiner, S. Giorgini, M. Holland and D. S. Jin, Phys. Rev. Lett. 95 (2005) 250404.
A. Perali, P. Pieri, L. Pisani and G. C. Strinati, Phys. Rev. Lett. 92 (2004) 220404.
Yan He, Chih-Chun Chien, Qijin Chen and K. Levin. Phys. Rev. B 76 (2007) 224516.
M.J.H. Ku, A.T. Sommer, L.W. Cheuk, and Martin W. Zwierlein, Science 335 (2012) 563.
C.A.R. Sa de Melo, M. Randeria and J.R. Engelbrecht, Phys. Rev. Lett. 71 (1993) 3202.
C.A. Regal, M. Greiner, and D. S. Jin, Phys. Rev. Lett. 92 (2004) 040403.
M.W. Zwierlein, C.A. Stan, C.H. Schunck, S.M.F. Raupach, A.J. Kerman, and W. Ketterle, Phys. Rev. Lett. 92 (2004) 120403.
Tsubota M. and Kasamatsu K, Quantized Vortices and Quantum Turbulence. In: Bramati A., Modugno M. (eds) Physics of Quantum Fluids. Springer Series in Solid-State Sciences, vol 177. (Springer, Berlin, Heidelberg, 2013).
M. Tsatsos et al., Phys. Rep. 622 (2016) 1.
Downloads
Published
How to Cite
Issue
Section
License
Authors retain copyright and grant the Revista Mexicana de Física right of first publication with the work simultaneously licensed under a CC BY-NC-ND 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
