Quantum Metrology and Sensing

Recent progress in the manipulation of atomic and optical systems forms the basis of a new class of quantum devices. A major line of research is quantum metrology and sensing, devoted to measurements enhanced by the low temperature, low decoherence, and/or strong quantum correlations. Apart from the long-standing interest in the pursuit of increasing the performance of atomic clocks, one can perform measurements of accelerations, rotations, magnetic or electric fields. Based on the application of a variety of interferometric schemes, the main advantages are that such devices may perform better at the micrometer scale, and that—even though not the best in absolute sensitivity—they can be portable, with a breadth of research and technological applications. We are broadly interested in applying techniques of many-body physics to the study of this new generation of quantum devices.

Publications

1) S. M. Giampaolo, and T. Macrì, Entanglement, holonomic constraints, and the quantization of fundamental interactions, arXiv:1806.08383 (2018).

2) K. Macieszczak, E. Levi, T. Macrì, I. Lesanovsky, and J. P. Garrahan, Coherence, entanglement and quantumness in closed and open systems with conserved charge, with an application to many-body localisation, arXiv:1805.00079.

3) S. M. Giampaolo, A. Trombettoni, P. Krüger, T. Macrì, Many-Body Atomic Speed Sensor in Lattices, Phys. Rev. A 97, 041602 Rapid Communications (2018).

4) T. Macrì, L. Pezzè and A. Smerzi, Loschmidt Echo quantum metrology, Phys. Rev. A 94, 010102(R) (2016). Selected for Kaleidoskopes in Phys. Rev. A (July 2016).