6 citations · 15 across the 8 of their papers we have counts for
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Quantum simulation of molecular excited-state manifolds and energies using the TEPID-ADAPT-VQE algorithm
Jason Saroni, Bharath Sambasivam, Ayush Asthana +1
The simulation of molecular excited states is a key challenge in quantum chemistry and a promising application for quantum computing. In this work, we investigate the efficacy of t…
Exact and Tunable Quantum Krylov Subspaces via Unitary Decomposition
Ayush Asthana
Quantum Krylov subspace methods can extract ground and excited states by diagonalizing the Hamiltonian in a compact variational space. In practice, these spaces are almost always g…
On the generalized eigenvalue problem in subspace-based excited state methods for quantum computers
Prince Frederick Kwao, Srivathsan Poyyapakkam Sundar, Brajesh Gupt +1
Solving challenging problems in quantum chemistry is one of the most promising applications of quantum computers. Within the quantum algorithms proposed for problems in excited sta…
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…
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…
Minimizing state preparation times in pulse-level variational molecular simulations
Ayush Asthana, Chenxu Liu, Oinam Romesh Meitei +3
Quantum simulation on NISQ devices is severely limited by short coherence times. A variational pulse-shaping algorithm known as ctrl-VQE was recently proposed to address this issue…