6 papers
Fermionic mean-field dynamics for spin systems beyond free fermions
Rishab Dutta, Marc Illa, Niranjan Govind +1
We introduce the fermionized time-dependent Hartree-Fock (fTDHF), a real-time quantum dynamics method for spin-1/2 Hamiltonians following their mapping to fermions via the Jordan-W…
Gate-Level Quantum Simulation of Nonunitary Linear Dynamics with Hybrid Oscillator-Qubit Architecture
Elin Ranjan Das, Muqing Zheng, Rishab Dutta +3
We realize the one-mode unitary dilation of nonunitary linear dynamics as a gate-level hybrid oscillator--qubit architecture. An oscillator encodes the kernel by state preparation…
Solving Constrained Optimization Problems Using Hybrid Qubit-Qumode Quantum Devices
Rishab Dutta, Brandon Allen, Chuzhi Xu +8
Variational Quantum Algorithms (VQAs) provide a promising framework for tackling complex optimization problems on near-term quantum hardware. Here, we demonstrate that hybrid qubit…
Qumode-Based Variational Quantum Eigensolver for Molecular Excited States
Rishab Dutta, Cameron Cianci, Alexander V. Soudackov +5
We introduce the Qumode Subspace Variational Quantum Eigensolver (QSS-VQE), a hybrid quantum-classical algorithm for computing molecular excited states using the Fock basis of boso…
A Perspective on Quantum Computing Applications in Quantum Chemistry using 25--100 Logical Qubits
Yuri Alexeev, Victor S. Batista, Nicholas Bauman +27
The intersection of quantum computing and quantum chemistry represents a promising frontier for achieving quantum utility in domains of both scientific and societal relevance. Owin…
Simulating electronic structure on bosonic quantum computers
Rishab Dutta, Nam P. Vu, Chuzhi Xu +7
Quantum harmonic oscillators, or qumodes, provide a promising and versatile framework for quantum computing. Unlike qubits, which are limited to two discrete levels, qumodes have a…