Micromotion minimization using Ramsey interferometry by Gerard Higgins, Shalina Salim, Chi Zhang, Harry Parke, Fabian Pokorny, Markus Hennrich

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Ramsey interferometry of non-Hermitian quantum impurities by F. Tonielli, N. Chakraborty, F. Grusdt, J. Marino

“…Our results illustrate the prospects for experiments employing Ramsey interferometry to study dissipative quantum impurities in condensed matter and cold-atom systems.…”
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Geometric Ramsey interferometry with a tripod scheme by Madasu, Chetan Sriram, Rathod, Ketan Damji, Chang, Chi Kwong, Wilkowski, David

“…Ramsey interferometry is a key technique for precision spectroscopy and to probe the coherence of quantum systems. …”
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Ramsey interferometry with cold atoms in coherent population trapping by Chengyin Han, Bo Lu, Chaohong Lee

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Multi-parameter estimation with multi-mode Ramsey interferometry by Xinwei Li, Jia-Hao Cao, Qi Liu, Meng Khoon Tey, Li You

“…For a single parameter, atomic Ramsey interferometry (or equivalently optical Mach–Zehnder interferometry) is capable of providing the precision at the standard quantum limit (SQL) using unentangled probe states as input. …”
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Initial Dynamics of Quantum Impurities in a Bose–Einstein Condensate by Magnus G. Skou, Thomas G. Skov, Nils B. Jørgensen, Jan J. Arlt

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Frequency estimation under non-Markovian spatially correlated quantum noise by Francisco Riberi, Leigh M Norris, Félix Beaudoin, Lorenza Viola

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Two- and three-body contacts in the unitary Bose gas by Fletcher, R, Lopes, R, Man, J, Navon, N, Smith, R, Zwierlein, M, Hadzibabic, Z

“…This profound insight has transformed our understanding of strongly interacting Fermi gases. Using Ramsey interferometry, we studied coherent evolution of the resonantly interacting Bose gas, and we show here that it cannot be explained by only pairwise correlations. …”

The manipulation of ultracold atoms of high orbitals in optical lattices by Shengjie Jin, Xuzong Chen, Xiaoji Zhou

“…Based on these methods, we construct the atom-orbital qubit under nonadiabatic holonomic quantum control and Ramsey interferometry with trapped motional quantum states. …”
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Extracting quantum work statistics and fluctuation theorems by single-qubit interferometry. by Dorner, R, Clark, SR, Heaney, L, Fazio, R, Goold, J, Vedral, V

“…Specifically, we show that the characteristic function of the work distribution for a nonequilibrium quench of a general quantum system can be extracted by Ramsey interferometry of a single probe qubit. Our scheme paves the way for the full characterization of nonequilibrium processes in a variety of quantum systems, ranging from single particles to many-body atomic systems and spin chains. …”

Nonlinear quantum gates for a Bose-Einstein condensate by Shu Xu, Jörg Schmiedmayer, Barry C. Sanders

“…Thus, we develop a rigorous foundation for quantum gates, obtained by solving the equation for evolution, and then we employ this foundation, combined with quantum-control techniques and appropriate state-sampling techniques, to devise feasible nonlinear Hadamard gates and thereby feasible, i.e., high-contrast, nonlinear Ramsey interferometry. Our approach to BEC interferometry and quantum logic shifts the paradigm by enlarging to the case of nonlinear quantum mechanics, which we apply to the cases of BEC interferometry and quantum information processing.…”
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Possibility of observing energy decoherence due to quantum gravity by Simon, C, Jaksch, D

“…We then show how local energy decoherence, which acts separately on system and phase reference, could be detected with remarkable sensitivity and over a wide range of length scales by long-distance Ramsey interferometry with metastable atomic states. The sensitivity of the experiments can be further enhanced using multiatom entanglement.…”

Improved Quantum Magnetometry beyond the Standard Quantum Limit by J. B. Brask, R. Chaves, J. Kołodyński

“…Here, we argue that the transversal-noise model applies to the setting of recent magnetometry experiments and show that a scaling advantage can be maintained with one-axis-twisted spin-squeezed states and Ramsey-interferometry-like measurements. This is achieved by exploiting the geometry of the setup that, as we demonstrate, has a strong influence on the achievable quantum enhancement for experimentally feasible parameter settings. …”
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Optimal Protocols for Quantum Metrology with Noisy Measurements by Sisi Zhou, Spyridon Michalakis, Tuvia Gefen

“…Applications to noisy Ramsey interferometry and thermometry are presented, as well as explicit circuit constructions of optimal controls.…”
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Two- and three-body contacts in the unitary Bose gas by Fletcher, Richard J, Lopes, Raphael, Man, Jay, Navon, Nir, Smith, Robert P, Zwierlein, Martin W, Hadzibabic, Zoran

“…This profound insight has transformed our understanding of strongly interacting Fermi gases. Using Ramsey interferometry, we studied coherent evolution of the resonantly interacting Bose gas, and we show here that it cannot be explained by only pairwise correlations. …”
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Ultracold molecules for quantum simulation: rotational coherences in CaF and RbCs by Blackmore, JA, Caldwell, L, Gregory, PD, Bridge, EM, Sawant, R, Aldegunde, J, Mur-Petit, J, Jaksch, D, Hutson, JM, Sauer, BE, Tarbutt, MR, Cornish, SL

“…Here, we report the development of coherent quantum state control using microwave fields in $^{40}$Ca$^{19}$F and $^{87}$Rb$^{133}$Cs molecules, a crucial ingredient for many quantum simulation applications. We perform Ramsey interferometry measurements with fringe spacings of $\sim 1~\rm kHz$ and investigate the dephasing time of a superposition of $N=0$ and $N=1$ rotational states when the molecules are confined. …”

Correlated dephasing noise in single-photon scattering by Tomás Ramos, Juan José García-Ripoll

“…In addition, we demonstrate that these spectroscopic measurements contain the same information as standard time-resolved Ramsey interferometry, and thus they can be used to fully characterize the noise correlations without direct access to the emitter. …”
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Electromagnetically induced transparency by NMR by Son, HyungBin, 1981-

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Extracting quantum work statistics by single qubit interferometry by Vedral, V

“…We show that the characteristic function of the work distribution of a quantum system (which is basically equal to the Wick rotated average exponential of the thermodynamical work) can be extracted from Ramsey interferometry of a single probe qubit (which need not itself be pure, though it must not be fully depolarized) [3,4]. …”

Extracting quantum work statistics by single qubit interferometry by Vedral, V

“…We show that the characteristic function of the work distribution of a quantum system (which is basically equal to the Wick rotated average exponential of the thermodynamical work) can be extracted from Ramsey interferometry of a single probe qubit (which need not itself be pure, though it must not be fully depolarized) [3,4]. …”