Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Albert, Victor V."'
We show that a subset of the basis for the irreducible representations of the total $SU(2)$ rotation forms a covariant approximate quantum error-correcting code with transversal $U(1)$ logical gates. Using only properties of the angular momentum alge
Externí odkaz:
http://arxiv.org/abs/2409.20561
Autor:
Jain, Shubham P., Albert, Victor V.
The non-local interactions in several quantum devices allow for the realization of more compact quantum encodings while retaining the same degree of protection against noise. Anticipating that short to medium-length codes will soon be realizable, it
Externí odkaz:
http://arxiv.org/abs/2408.12752
We propose a class of metrological resource states whose quantum Fisher information scales optimally in both system size and noise rate. In these states, qubits are partitioned into sensing groups with relatively large correlations within a group but
Externí odkaz:
http://arxiv.org/abs/2408.00079
The current theoretical framework for topological phases of matter is based on the thermodynamic limit of a system with geometrically local interactions. A natural question is to what extent the notion of a phase of matter remains well-defined if we
Externí odkaz:
http://arxiv.org/abs/2405.19412
We formulate a quantum phase space for molecular rotational and nuclear-spin states. Taking in molecular geometry and nuclear-spin data, our framework yields admissible position and momentum states, inter-convertible via a generalized Fourier transfo
Externí odkaz:
http://arxiv.org/abs/2403.04572
Despite growing interest in beyond-group symmetries in quantum condensed matter systems, there are relatively few microscopic lattice models explicitly realizing these symmetries, and many phenomena have yet to be studied at the microscopic level. We
Externí odkaz:
http://arxiv.org/abs/2312.09272
Publikováno v:
Quantum 8, 1403 (2024)
The CSS code construction is a powerful framework used to express features of a quantum code in terms of a pair of underlying classical codes. Its subsystem extension allows for similar expressions, but the general case has not been fully explored. E
Externí odkaz:
http://arxiv.org/abs/2311.18003
Diatomic molecular codes [arXiv:1911.00099] are designed to encode quantum information in the orientation of a diatomic molecule, allowing error correction from small torques and changes in angular momentum. Here, we directly study noise native to at
Externí odkaz:
http://arxiv.org/abs/2311.12324
We develop quantum information processing primitives for the planar rotor, the state space of a particle on a circle. By interpreting rotor wavefunctions as periodically identified wavefunctions of a harmonic oscillator, we determine the group of bos
Externí odkaz:
http://arxiv.org/abs/2311.07679
Autonomous quantum memories are a way to passively protect quantum information using engineered dissipation that creates an "always-on'' decoder. We analyze Markovian autonomous decoders that can be implemented with a wide range of qubit and bosonic
Externí odkaz:
http://arxiv.org/abs/2308.16233