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Showing 1 to 5 of 5 entries
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Quantum-gas microscope for fermionic atoms.

Physical review letters

Cheuk LW, Nichols MA, Okan M, Gersdorf T, Ramasesh VV, Bakr WS, Lompe T, Zwierlein MW.
PMID: 26024169
Phys Rev Lett. 2015 May 15;114(19):193001. doi: 10.1103/PhysRevLett.114.193001. Epub 2015 May 13.

We realize a quantum-gas microscope for fermionic ^{40}K atoms trapped in an optical lattice, which allows one to probe strongly correlated fermions at the single-atom level. We combine 3D Raman sideband cooling with high-resolution optics to simultaneously cool and...

Qutrit Randomized Benchmarking.

Physical review letters

Morvan A, Ramasesh VV, Blok MS, Kreikebaum JM, O'Brien K, Chen L, Mitchell BK, Naik RK, Santiago DI, Siddiqi I.
PMID: 34114846
Phys Rev Lett. 2021 May 28;126(21):210504. doi: 10.1103/PhysRevLett.126.210504.

Ternary quantum processors offer significant potential computational advantages over conventional qubit technologies, leveraging the encoding and processing of quantum information in qutrits (three-level systems). To evaluate and compare the performance of such emerging quantum hardware it is essential to...

Cooling and Autonomous Feedback in a Bose-Hubbard Chain with Attractive Interactions.

Physical review letters

Hacohen-Gourgy S, Ramasesh VV, De Grandi C, Siddiqi I, Girvin SM.
PMID: 26705615
Phys Rev Lett. 2015 Dec 11;115(24):240501. doi: 10.1103/PhysRevLett.115.240501. Epub 2015 Dec 09.

We engineer a quantum bath that enables entropy and energy exchange with a one-dimensional Bose-Hubbard lattice with attractive on-site interactions. We implement this in an array of three superconducting transmon qubits coupled to a single cavity mode; the transmons...

Direct Probe of Topological Invariants Using Bloch Oscillating Quantum Walks.

Physical review letters

Ramasesh VV, Flurin E, Rudner M, Siddiqi I, Yao NY.
PMID: 28409954
Phys Rev Lett. 2017 Mar 31;118(13):130501. doi: 10.1103/PhysRevLett.118.130501. Epub 2017 Mar 27.

The topology of a single-particle band structure plays a fundamental role in understanding a multitude of physical phenomena. Motivated by the connection between quantum walks and such topological band structures, we demonstrate that a simple time-dependent, Bloch-oscillating quantum walk...

Quantum dynamics of simultaneously measured non-commuting observables.

Nature

Hacohen-Gourgy S, Martin LS, Flurin E, Ramasesh VV, Whaley KB, Siddiqi I.
PMID: 27706145
Nature. 2016 Oct 27;538(7626):491-494. doi: 10.1038/nature19762. Epub 2016 Oct 05.

In quantum mechanics, measurements cause wavefunction collapse that yields precise outcomes, whereas for non-commuting observables such as position and momentum Heisenberg's uncertainty principle limits the intrinsic precision of a state. Although theoretical work has demonstrated that it should be...

Showing 1 to 5 of 5 entries