27 citations · 83 across the 7 of their papers we have counts for
7 papers
Modeling local decoherence of a spin ensemble using a generalized Holstein-Primakoff mapping to a bosonic mode
Andrew Kolmer Forbes, Philip Daniel Blocher, Ivan H. Deutsch
We show how the decoherence that occurs in an entangling atomic spin-light interface can be simply modeled as the dynamics of a bosonic mode. Although one seeks to control the coll…
Macroproperties vs. Microstates in the Classical Simulation of Critical Phenomena in Quench Dynamics of 1D Ising Models
Anupam Mitra, Tameem Albash, Philip Daniel Blocher +4
We study the tractability of classically simulating critical phenomena in the quench dynamics of one-dimensional transverse field Ising models (TFIMs) using highly truncated matrix…
Probing scrambling and operator size distributions using random mixed states and local measurements
Philip Daniel Blocher, Karthik Chinni, Sivaprasad Omanakuttan +1
The dynamical spreading of quantum information through a many-body system, typically called scrambling, is a complex process that has proven to be essential to describe many proper…
Scrambling and quantum chaos indicators from long-time properties of operator distributions
Sivaprasad Omanakuttan, Karthik Chinni, Philip Daniel Blocher +1
Scrambling is a key concept in the analysis of nonequilibrium properties of quantum many-body systems. Most studies focus on its characterization via out-of-time-ordered correlatio…
Measuring out-of-time-ordered correlation functions without reversing time evolution
Philip Daniel Blocher, Serwan Asaad, Vincent Mourik +3
Out-of-time-ordered correlation functions (OTOCs) play a crucial role in the study of thermalization, entanglement, and quantum chaos, as they quantify the scrambling of quantum in…
The quantum regression theorem for out-of-time-ordered correlation functions
Philip Daniel Blocher, Klaus Molmer
We derive an extension of the quantum regression theorem to calculate out-of-time-order correlation functions in Markovian open quantum systems. While so far mostly being applied i…
How many atoms get excited when they decay?
Philip Daniel Blocher, Klaus Molmer
We analyze the time evolution of a two-level system prepared in a superposition of its ground state and radiatively unstable excited state. We show that by choosing appropriate mea…