12 papers
Exact Many-body Quantum Dynamics in One-Dimensional Baths via Collective Spins
Joseph T. Lee, Silvia Cardenas-Lopez, Stuart J. Masson +2
Computing the exact dynamics of many-body quantum systems becomes intractable as system size grows. Here, we present a symmetry-based method that provides an exponential reduction…
Dissipative preparation of injective tensor network states
Drishti Baruah, Georgios Styliaris, J. Ignacio Cirac +1
The preparation of tensor network states is a fundamental prerequisite for a wide range of quantum simulation tasks. While many unitary protocols for preparing these states have be…
Quantum Memory and Autonomous Computation in Two Dimensions
Gesa Dünnweber, Georgios Styliaris, Rahul Trivedi
Standard approaches to quantum error correction (QEC) require active maintenance using measurements and classical processing. Passive QEC, by contrast, has so far been established…
Sequential Measurements as a Resource for Quantum Metrology
Koray Mentesoglu, Rahul Trivedi, Sara Mouradian
We present a protocol in which sequential weak measurements of a quantum harmonic oscillator enable simultaneous estimation of both quadratures of a displacement channel. Calculati…
The product structure of MPS-under-permutations
Marta Florido-Llinà s, Ãlvaro M. Alhambra, Rahul Trivedi +3
Tensor network methods have proved to be highly effective in addressing a wide variety of physical scenarios, including those lacking an intrinsic one-dimensional geometry. In such…
Structure and Classification of Matrix Product Quantum Channels
Giorgio Stucchi, J. Ignacio Cirac, Rahul Trivedi +1
We develop a framework for Matrix Product Quantum Channels (MPQCs), a one-dimensional tensor-network description of completely positive, trace-preserving maps. We focus on translat…