250 citations · 360 across the 9 of their papers we have counts for
10 papers
Thermodynamics of one and two-qubit quantum refrigerators interacting with squeezed baths: a comparative study
Ashutosh Kumar, Sourabh Lahiri
We investigate the nonequilibrium refrigeration of one and two-qubit systems in a squeezed thermal bath. We characterize the performance of one and two-qubit refrigerators in the p…
Quantum simulation of molecular response properties
Ashutosh Kumar, Ayush Asthana, Vibin Abraham +6
Accurate modeling of the response of molecular systems to an external electromagnetic field is challenging on classical computers, especially in the regime of strong electronic cor…
Comment on "Canonical transcorrelated theory with projected Slater-type geminals" [J. Chem. Phys. 136, 084107 (2012)]
Conner Masteran, Ashutosh Kumar, Nakul Teke +3
This Comment identifies errors in the formalism/implementation reported in Ref. 1 and discusses some aspects of that work that were not fully specified in the original publication.…
Thermodynamics of one and two-qubit nonequilibrium heat engines running between squeezed thermal reservoirs
Ashutosh Kumar, Trilochan Bagarti, Sourabh Lahiri +1
Quantum heat engines form an active field of research due to their potential applications. There are several phenomena that are unique to the quantum regime, some of which are know…
Is there evidence for exponential quantum advantage in quantum chemistry?
Seunghoon Lee, Joonho Lee, Huanchen Zhai +15
The idea to use quantum mechanical devices to simulate other quantum systems is commonly ascribed to Feynman. Since the original suggestion, concrete proposals have appeared for si…
Quantum self-consistent equation-of-motion method for computing molecular excitation energies, ionization potentials, and electron affinities on a quantum computer
Ayush Asthana, Ashutosh Kumar, Vibin Abraham +8
Near-term quantum computers are expected to facilitate material and chemical research through accurate molecular simulations. Several developments have already shown that accurate…
Accurate quantum simulation of molecular ground and excited states with a transcorrelated Hamiltonian
Ashutosh Kumar, Ayush Asthana, Conner Masteran +5
NISQ era devices suffer from a number of challenges like limited qubit connectivity, short coherence times and sizable gate error rates. Thus, quantum algorithms are desired that r…
Computing molecular excited states on a D-Wave quantum annealer
Alexander Teplukhin, Brian K. Kendrick, Susan M. Mniszewski +6
The possibility of using quantum computers for electronic structure calculations has opened up a promising avenue for computational chemistry. Towards this direction, numerous algo…
Explicitly correlated coupled cluster method for accurate treatment of open-shell molecules with hundreds of atoms
Ashutosh Kumar, Frank Neese, Edward F. Valeev
We present a near-linear scaling formulation of the explicitly-correlated coupled-cluster singles and doubles with perturbative triples method (CCSD(T)) f…
Quantum simulation of electronic structure with a transcorrelated Hamiltonian: improved accuracy with a smaller footprint on the quantum computer
Mario Motta, Tanvi P. Gujarati, Julia E. Rice +6
Quantum simulations of electronic structure with a transformed Hamiltonian that includes some electron correlation effects are demonstrated. The transcorrelated Hamiltonian used in…