We introduce protocols to prepare many-body quantum states with quantum circuits assisted
by local operations and classical communication. We show that by lifting the requirement of …

We consider the problem of engineering the two-excitation Dicke state| D 2 3〉 in a three-
qubit system with all-to-all Ising-type qubit-qubit interaction, which is also subject to global …

We investigate a time-efficient and robust preparation of spin-squeezed states—a class of
states of interest for quantum enhanced metrology—in internal bosonic Josephson junctions …

We propose quantum algorithms for projective ground-state preparation and calculations of
the many-body Green's functions directly in frequency domain. The algorithms are based on …

The notion of su (2) su(2) spin‐ss Dicke states is introduced, which are higher‐spin
generalizations of usual (spin‐1/2) Dicke states. These multi‐qudit states can be expressed …

With respect to the transversal gate group (an invariant of quantum codes), we demonstrate
that non-additive codes can outperform stabilizer codes. We do this by constructing spin …

Going beyond the standard quantum limit in noisy quantum metrology is an important and
challenging task. Here we show how Dicke states can be used to surpass the standard …

We present an algorithm utilizing mid-circuit measurement and feedback that prepares
Dicke states with polylogarithmically many ancillas and polylogarithmic depth. Our algorithm …

A quantum code is usually referred to using three parameters: the number of physical qubits
$ n $, the dimension of the codespace $ K $, and the distance of the code $ d $. But these …

Photonic Fock states are the most basic quantum states of a radiation field, but arbitrary
number states are still difficult to produce. Here we propose to use superradiant atoms in a …