Zobrazeno 1 - 10
of 209
pro vyhledávání: '"Omanakuttan A"'
Optically trapped atoms in arrays of optical tweezers have emerged as a powerful platform for quantum information processing given the recent demonstrations of high-fidelity quantum logic gates and on-demand reconfigurable geometry. Both in gate oper
Externí odkaz:
http://arxiv.org/abs/2410.23430
We present a novel strategy for obtaining optimal probe states and measurement schemes in a class of noiseless multiparameter estimation problems with symmetry among the generators. The key to the framework is the introduction of a set of quantum met
Externí odkaz:
http://arxiv.org/abs/2409.16515
Autor:
Chow, Matthew N. H., Buchemmavari, Vikas, Omanakuttan, Sivaprasad, Little, Bethany J., Pandey, Saurabh, Deutsch, Ivan H., Jau, Yuan-Yu
Leakage out of the computational subspace is a major limitation of current state-of-the-art neutral-atom quantum computers and a significant challenge for scalable systems. In a quantum processor with cesium atoms, we demonstrate proof-of-principle c
Externí odkaz:
http://arxiv.org/abs/2405.10434
Autor:
Omanakuttan, Sivaprasad
This dissertation explores quantum computation using qudits encoded into large spins, emphasizing the concept of quantum co-design to harness the unique capabilities of physical platforms for enhanced quantum information processing. First, we delve i
Externí odkaz:
http://arxiv.org/abs/2405.07885
Autor:
Omanakuttan, Sivaprasad, Buchemmavari, Vikas, Gross, Jonathan A., Deutsch, Ivan H, Marvian, Milad
Publikováno v:
PRX Quantum 2024
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. With this, we can correct the dominant error sources, namely proc
Externí odkaz:
http://arxiv.org/abs/2401.04271
Publikováno v:
Phys. Rev. A 109, 012615 (2024)
The Rydberg dipole-blockade has emerged as the standard mechanism to induce entanglement between neutral atom qubits. In these protocols, laser fields that couple qubit states to Rydberg states are modulated to implement entangling gates. Here we pre
Externí odkaz:
http://arxiv.org/abs/2307.16434
Publikováno v:
Phys. Rev. Research 6, 013309 (2024)
The dynamical spreading of quantum information through a many-body system, typically called scrambling, is a complex process that has proven to be essential to describe many properties of out-of-equilibrium quantum systems. Scrambling can, in princip
Externí odkaz:
http://arxiv.org/abs/2305.16992
Publikováno v:
PhysRevA.108.022424(2023)
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), extending the tools developed in Phys. Rev. Lett. 127, 010504 for s
Externí odkaz:
http://arxiv.org/abs/2304.08611
Publikováno v:
PRXQuantum.4.040333(2023)
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 digital, Lie-group control. In both cases, the key is access to a tim
Externí odkaz:
http://arxiv.org/abs/2212.08799
Publikováno v:
Phys. Rev. A 107, 032418 (2023)
Scrambling is a key concept in the analysis of nonequilibrium properties of quantum many-body systems. Most studies focus on its characterization via out-of-time-ordered correlation functions (OTOCs), particularly through the early-time decay of the
Externí odkaz:
http://arxiv.org/abs/2211.15872