A universal fault-tolerant quantum computer that can efficiently solve problems such as
integer factorization and unstructured database search requires millions of qubits with low …

Quantum computers can exploit a Hilbert space whose dimension increases exponentially
with the number of qubits. In experiment, quantum supremacy has recently been achieved …

We develop computationally affordable and encoding independent gradient evaluation
procedures for unitary coupled-cluster type operators, applicable on quantum computers …

Determining the properties of molecules and materials is one of the premier applications of
quantum computing. A major question in the field is how to use imperfect near-term quantum …

We present a classically tractable model that leads to optimized low-depth quantum circuits
leveraging separable-pair approximations. The obtained circuits are well suited as a …

Quantum computing is believed to be particularly useful for the simulation of chemistry and
materials, among the various applications. In recent years, there have been significant …

We introduce a quantum algorithm to efficiently prepare states with a small energy variance
at the target energy. We achieve it by filtering a product state at the given energy with a …

We consider performing phase estimation under the following conditions: we are given only
one copy of the input state, the input state does not have to be an eigenstate of the unitary …

Determining the properties of molecules and materials is one of the premier applications of
quantum computing. A major question in the field is: how might we use imperfect near-term …

Quantum chemistry is one of the most promising near-term applications of quantum
computers. Quantum algorithms such as variational quantum eigen solver (VQE) and …