Blackbody-radiation-induced facilitated excitation of Rydberg atoms in optical tweezers

Festa, Lorenzo; Lorenz, Nikolaus; Steinert, Lea-Marina; Chen, Zaijun; Osterholz, Philip; Eberhard, Robin; Groß, Christian

doi:10.1103/physreva.105.013109

Cited by 20 publications

(13 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For our parameters and assuming a phase-noise-free laser, we expect a dressed (black-body radiation limited) lifetime of τ dr = 1.7 ms. In contrast, the experimentally observed lifetime is reduced to 70µs (for ∆ ↓ = −2π • 0.6 MHz and Ω ↓ = 2π • 0.4 MHz) due to laser noise [43]. Atom loss due to excitation to Rydberg pair resonances is weak, as shown in Fig.…”

Section: Rydberg Laser Setupmentioning

confidence: 85%

“…We load 39 K atoms into the traps by alternating trapping and cooling light with a frequency of 1.4 MHz [44], one order of magnitude faster than the radial trapping frequency of ω r = 2π • 158 kHz (ω z = 2π • 25 kHz). On average, 50 % of the traps are filled with a single atom [42,43], and the experimental cycle rate is 1 Hz.…”

Section: Experimental Sequencementioning

confidence: 99%

“…A second, equally important, effect is caused by the line shifts due to tweezer-to-tweezer inhomogeneities. In addition, laser phase noise limits the dressing time [43]. We additionally map out the angular dependence of the flop-flop interaction for a fixed distance of 5.6 µm and Rabi couplings of (Ω ↑ , Ω ↓ ) = 2π • (0.55, 0.30) MHz.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Spatially programmable spin interactions in neutral atom arrays

Steinert¹,

Osterholz²,

Eberhard³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

Quantum simulators based on arrays of neutral atoms have proven to be among the most promising platforms to explore and solve non-trivial problems of complex strongly correlated many-body phenomena. This success is based on the optimally hardware-efficient analog implementation of the Hamiltonian under study. The drawback of this approach is the narrow range of problems addressable with any chosen architecture, which motivates the development of flexible programming techniques for analog simulators. We report on the realization of spatially programmable interactions for XYZ models implemented with neutral atoms in optical tweezers. We use multi-color near-resonant coupling to highly excited electronic states to induce spin-dependent interactions between atoms in atomic ground states. Van-der-Waals interactions between these Rydberg states lead to mixing between usually well-separated mj-sublevels. This opens up distance and angular-dependent programmable interaction channels, which we use to design spin-exchange and pairwise spin flips. Our results pave the way toward universally programmable spin arrays for analog quantum simulators.

show abstract

Section: Rydberg Laser Setupmentioning

confidence: 85%

Section: Experimental Sequencementioning

confidence: 99%

See 1 more Smart Citation

Spatially programmable spin interactions in neutral atom arrays

Steinert¹,

Osterholz²,

Eberhard³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…This additional loss could be associated with off-resonant excitation by the near-resonant sideband, depended on the detuning ∆ and the power in the sideband, and was independent of the macrodimer coupling. Possible origins include collective loss channels found in other Rydberg dressing experiments operating at high densities, potentially triggered by black-body radiation [8,29,30], as well as phase noise on the laser [31].…”

Section: (C))mentioning

confidence: 93%

Realizing distance-selective interactions in a Rydberg-dressed atom array

Hollerith,

Srakaew,

Wei

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

Measurement-based quantum computing relies on the rapid creation of large-scale entanglement in a register of stable qubits. Atomic arrays are well suited to store quantum information, and entanglement can be created using highly-excited Rydberg states. Typically, isolating pairs during gate operation is difficult because Rydberg interactions feature long tails at large distances. Here, we engineer distance-selective interactions that are strongly peaked in distance through off-resonant laser coupling of molecular potentials between Rydberg atom pairs. Employing quantum gas microscopy, we verify the dressed interactions by observing correlated phase evolution using many-body Ramsey interferometry. We identify atom loss and coupling to continuum modes as a limitation of our present scheme and outline paths to mitigate these effects, paving the way towards the creation of large-scale entanglement.

show abstract

“…Let us finally comment on possible decoherence mechanisms of the hydrogen-like Rydberg states of a given n-manifold. First, radiative decay due to spontaneous emission and black body radiation is a well known source of decoherence in Rydberg experiments [96][97][98]. However, similar to experiments with circular Rydberg states [60,99], black body radiation can be suppressed in a cryogenic environment, while at the same time spontaneous emission is strongly reduced for all states with m l > l * since the primary decay channels to energetically low-lying states are dipole-forbidden (for further details see App.…”

Section: Nonhydrogenic Atoms and The Electron Spinmentioning

confidence: 99%

High-dimensional SO(4)-symmetric Rydberg manifolds for quantum simulation

Kruckenhauser¹,

Bijnen²,

Zache³

et al. 2022

Preprint

View full text Add to dashboard Cite

We develop a toolbox for manipulating arrays of Rydberg atoms prepared in high-dimensional hydrogen-like manifolds in the regime of linear Stark and Zeeman effect. We exploit the SO(4) symmetry to characterize the action of static electric and magnetic fields as well as microwave and optical fields on the well-structured manifolds of states with principal quantum number n. This enables us to construct generalized large-spin Heisenberg models for which we develop state-preparation and readout schemes. Due to the available large internal Hilbert space, these models provide a natural framework for the quantum simulation of Quantum Field Theories, which we illustrate for the case of the sine-Gordon and massive Schwinger models. Moreover, these high-dimensional manifolds also offer the opportunity to perform quantum information processing operations for qudit-based quantum computing, which we exemplify with an entangling gate and a state-transfer protocol for the states in the neighborhood of the circular Rydberg level.

show abstract

Blackbody-radiation-induced facilitated excitation of Rydberg atoms in optical tweezers

Cited by 20 publications

References 70 publications

Spatially programmable spin interactions in neutral atom arrays

Spatially programmable spin interactions in neutral atom arrays

Realizing distance-selective interactions in a Rydberg-dressed atom array

High-dimensional SO(4)-symmetric Rydberg manifolds for quantum simulation

Contact Info

Product

Resources

About