Measurement-based cooling of many-body quantum systems
Abstract: We introduce a novel technique for efficiently cooling many-body quantum systems with unknown Hamiltonians down to their ground states with a high fidelity. The technique involves initially applying a strong external field followed by a sequence of single-degree-of-freedom (single-qubit) measurements and radiofrequency (RF) pulses to polarize the system along the field direction. Subsequently, the field is adiabatically switched off, allowing the system to evolve towards its ground state as governed by the quantum adiabatic theorem. We present numerical simulation results demonstrating the effectiveness of the technique applied to quantum spin chains with long-range and short-range interactions as prototypes for many-body quantum systems.
- S. Lloyd, Phys. Rev. A 62, 022108 (2000).
- S. G. Schirmer, in Lagrangian and Hamiltonian Methods for Nonlinear Control 2006 (Springer, 2007) pp. 293–304.
- D. Pastorello, International Journal of Quantum Information 14, 1650010 (2016).
- D. Dong and I. R. Petersen, IET control theory & applications 4, 2651 (2010).
- D. Rossini and E. Vicari, Physical Review B 102, 035119 (2020).
- S. Ashhab and F. Nori, Phys. Rev. A 82, 062103 (2010).
- C. Gross and W. S. Bakr, Nature Physics 17, 1316 (2021).
- W. Giauque and D. MacDougall, Physical Review 43, 768 (1933).
- I. Shepherd and G. Feher, Physical Review Letters 15, 194 (1965).
- L. M. K. Vandersypen and I. L. Chuang, Rev. Mod. Phys. 76, 1037 (2005).
- T. A. Elsayed and B. V. Fine, Physical Review Letters 110, 070404 (2013).
- C. Gross and I. Bloch, Annual Review of Cold Atoms and Molecules , 181 (2015).
- A. Abragam, The principles of nuclear magnetism (Oxford university press, 1961).
- T. A. Elsayed and B. V. Fine, Phys. Rev. B 105, 104305 (2022).
- J. Ge and M. P. Fok, Scientific reports 5, 1 (2015).
- H. Ott, Reports on Progress in Physics 79, 054401 (2016).
- D. Poulin and P. Wocjan, Physical review letters 103, 220502 (2009).
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