Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe
Quantum optimal control, a toolbox for devising and implementing the shapes of external
fields that accomplish given tasks in the operation of a quantum device in the best way …
fields that accomplish given tasks in the operation of a quantum device in the best way …
Optimal control of molecular spin qudits
We demonstrate, numerically, the possibility of manipulating the spin states of molecular
nanomagnets with shaped microwave pulses designed with quantum optimal control theory …
nanomagnets with shaped microwave pulses designed with quantum optimal control theory …
Narrow-line imaging of single strontium atoms in shallow optical tweezers
A Urech, IHA Knottnerus, RJC Spreeuw… - Physical Review …, 2022 - APS
Single strontium atoms held in optical tweezers have so far only been imaged using the
broad 1 S 0-1 P 1 transition. For Yb, use of the narrow (183-kHz wide) 1 S 0-3 P 1 transition …
broad 1 S 0-1 P 1 transition. For Yb, use of the narrow (183-kHz wide) 1 S 0-3 P 1 transition …
Fault-Tolerant Quantum Computation Using Large Spin-Cat Codes
S Omanakuttan, V Buchemmavari, JA Gross… - PRX Quantum, 2024 - APS
We construct a fault-tolerant quantum error-correcting protocol based on a qubit encoded in
a large spin qudit using a spin-cat code, analogous to the continuous-variable cat encoding …
a large spin qudit using a spin-cat code, analogous to the continuous-variable cat encoding …
Complete unitary qutrit control in ultracold atoms
Physical quantum systems are commonly composed of more than two levels and offer the
capacity to encode information in higher-dimensional spaces beyond the qubit, starting with …
capacity to encode information in higher-dimensional spaces beyond the qubit, starting with …
Spin-squeezed Gottesman-Kitaev-Preskill codes for quantum error correction in atomic ensembles
S Omanakuttan, TJ Volkoff - Physical Review A, 2023 - APS
Gottesman-Kitaev-Preskill (GKP) codes encode a qubit in displaced phase-space combs of
a continuous-variable (CV) quantum system and are useful for correcting a variety of high …
a continuous-variable (CV) quantum system and are useful for correcting a variety of high …
Qudit entanglers using quantum optimal control
We study the generation of two-qudit entangling quantum logic gates using two techniques
in quantum optimal control. We take advantage of both continuous, Lie algebraic control and …
in quantum optimal control. We take advantage of both continuous, Lie algebraic control and …
Squeezing multilevel atoms in dark states via cavity superradiance
We describe a method to create and store scalable and long-lived entangled spin-squeezed
states within a manifold of many-body cavity dark states using collective emission of light …
states within a manifold of many-body cavity dark states using collective emission of light …
Multispin Clifford codes for angular momentum errors in spin systems
S Omanakuttan, JA Gross - Physical Review A, 2023 - APS
The physical symmetries of a system play a central role in quantum error correction. In this
work we encode a qubit in a collection of systems with angular momentum symmetry (spins) …
work we encode a qubit in a collection of systems with angular momentum symmetry (spins) …
Experimental realization of a fermionic spin-momentum lattice
We experimentally realize a spin-momentum lattice with a homogeneously trapped Fermi
gas. The lattice is created via cyclically rotated atom-laser couplings between three bare …
gas. The lattice is created via cyclically rotated atom-laser couplings between three bare …