45 citations · 282 across the 27 of their papers we have counts for
27 papers
Regularized Warm-Started Quantum Approximate Optimization and Conditions for Surpassing Classical Solvers on the Max-Cut Problem
Zichang He, Anuj Apte, Brandon Augustino +4
Demonstrating quantum heuristics that outperform strong classical solvers on large-scale optimization remains an open challenge. Here we introduce Regularized Warm-Started QAOA (RW…
Digital signatures with classical shadows on near-term quantum computers
Pradeep Niroula, Minzhao Liu, Sivaprasad Omanakuttan +15
Quantum mechanics provides cryptographic primitives whose security is grounded in hardness assumptions independent of those underlying classical cryptography. However, existing pro…
Quantum Approximate Optimization of Integer Graph Problems and Surpassing Semidefinite Programming for Max-k-Cut
Anuj Apte, Sami Boulebnane, Yuwei Jin +3
Quantum algorithms for binary optimization problems have been the subject of extensive study. However, the application of quantum algorithms to integer optimization problems remain…
Holstein Primakoff spin codes for local and collective noise
Sivaprasad Omanakuttan, Tyler Thurtell, Andrew K. Forbes +2
Quantum error correction is essential for fault-tolerant quantum computation, yet most existing codes rely on local control and stabilizer measurements that are difficult to implem…
Compilation Pipeline for Predicting Algorithmic Break-Even in an Early-Fault-Tolerant Surface Code Architecture
Tianyi Hao, Joseph Sullivan, Sivaprasad Omanakuttan +2
Recent experimental progress in realizing surface code on hardware, including demonstrations of break-even logical memory on devices with up to hundreds of physical qubits, has mat…
Realization of a Quantum Streaming Algorithm on Long-lived Trapped-ion Qubits
Pradeep Niroula, Shouvanik Chakrabarti, Steven Kordonowy +30
Large classical datasets are often processed in the streaming model, with data arriving one item at a time. In this model, quantum algorithms have been shown to offer an unconditio…
Certified randomness amplification by dynamically probing remote random quantum states
Minzhao Liu, Pradeep Niroula, Matthew DeCross +49
Cryptography depends on truly unpredictable numbers, but physical sources emit biased or correlated bits. Quantum mechanics enables the amplification of imperfect randomness into n…
End-to-end quantum algorithms for tensor problems
Enrico Fontana, Sivaprasad Omanakuttan, Junhyung Lyle Kim +4
We present a comprehensive end-to-end quantum algorithm for tensor problems, including tensor PCA and planted kXOR, that achieves potential superquadratic quantum speedups over cla…
Threshold for Fault-tolerant Quantum Advantage with the Quantum Approximate Optimization Algorithm
Sivaprasad Omanakuttan, Zichang He, Zhiwei Zhang +9
Optimization is often cited as a promising application of quantum computers. However, the low degree of provable quantum speedups has led prior rigorous end-to-end resource analyse…
Iceberg Beyond the Tip: Co-Compilation of a Quantum Error Detection Code and a Quantum Algorithm
Yuwei Jin, Zichang He, Tianyi Hao +5
The rapid progress in quantum hardware is expected to make them viable tools for the study of quantum algorithms in the near term. The timeline to useful algorithmic experimentatio…
Coherence Preserving Leakage Detection and Cooling in Alkaline Earth Atoms
Sivaprasad Omanakuttan, Vikas Buchemmavari, Michael J. Martin +1
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 quantu…
Quantum error correction-inspired multiparameter quantum metrology
Sivaprasad Omanakuttan, Jonathan A. Gross, T. J. Volkoff
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…
Quantum Computation Using Large Spin Qudits
Sivaprasad Omanakuttan
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 pl…
Circuit-based leakage-to-erasure conversion in a neutral atom quantum processor
Matthew N. H. Chow, Vikas Buchemmavari, Sivaprasad Omanakuttan +4
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 qu…
Fault-tolerant quantum computation using large spin cat-codes
Sivaprasad Omanakuttan, Vikas Buchemmavari, Jonathan A. Gross +2
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 encod…
Entangling quantum logic gates in neutral atoms via the microwave-driven spin-flip blockade
Vikas Buchemmavari, Sivaprasad Omanakuttan, Yuan-Yu Jau +1
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 R…
Probing scrambling and operator size distributions using random mixed states and local measurements
Philip Daniel Blocher, Karthik Chinni, Sivaprasad Omanakuttan +1
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 proper…
Multispin Clifford codes for angular momentum errors in spin systems
Sivaprasad Omanakuttan, Jonathan A. Gross
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…
Qudit entanglers using quantum optimal control
Sivaprasad Omanakuttan, Anupam Mitra, Eric J. Meier +2
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…
Scrambling and quantum chaos indicators from long-time properties of operator distributions
Sivaprasad Omanakuttan, Karthik Chinni, Philip Daniel Blocher +1
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 correlatio…
Spin squeezed GKP codes for quantum error correction in atomic ensembles
Sivaprasad Omanakuttan, T. J. Volkoff
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-weight photonic errors. Here we…
Neutral atom entanglement using adiabatic Rydberg dressing
Anupam Mitra, Sivaprasad Omanakuttan, Michael J. Martin +2
We revisit the implementation of a two-qubit entangling gate, the Mølmer-Sørensen gate, using the adiabatic Rydberg dressing paradigm for neutral atoms as studied in [Phys. Rev. A…
Flavor isospin waves in one-dimensional axisymmetric neutrino gases
Huaiyu Duan, Joshua D. Martin, Sivaprasad Omanakuttan
Flavor oscillations can occur on very short spatial and temporal scales in the dense neutrino media in a core-collapse supernova (CCSN) or binary neutron star merger (BNSM) event.…
Quantum Optimal Control of Nuclear Spin Qudecimals in
Sivaprasad Omanakuttan, Anupam Mitra, Michael J. Martin +1
We study the ability to implement unitary maps on states of the nuclear spin in \textsuperscript{87}Sr, a dimensional (qudecimal) Hilbert space, using quantum optima…