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Binding complexity and multiparty entanglement

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [2];  [2]
  1. Univ. of Pennsylvania, Philadelphia, PA (United States); Vrije Univ. Brussel (VUB), and International Solvay Inst. (Belgium). Theoretische Natuurkunde; DOE/OSTI
  2. Univ. of Pennsylvania, Philadelphia, PA (United States)
We introduce “binding complexity”, a new notion of circuit complexity which quantifies the difficulty of distributing entanglement among multiple parties, each consisting of many local degrees of freedom. We define binding complexity of a given state as the minimal number of quantum gates that must act between parties to prepare it. To illustrate the new notion we compute it in a toy model for a scalar field theory, using certain multiparty entangled states which are analogous to configurations that are known in AdS/CFT to correspond to multiboundary wormholes. Pursuing this analogy, we show that our states can be prepared by the Euclidean path integral in (0 + 1)-dimensional quantum mechanics on graphs with wormhole-like structure. We compute the binding complexity of our states by adapting the Euler-Arnold approach to Nielsen’s geometrization of gate counting, and find a scaling with entropy that resembles a result for the interior volume of holographic multiboundary wormholes. We also compute the binding complexity of general coherent states in perturbation theory, and show that for “double-trace deformations” of the Hamiltonian the effects resemble expansion of a wormhole interior in holographic theories.
Research Organization:
Duke Univ., Durham, NC (United States)
Sponsoring Organization:
It From Qubit Simons Collaboration; National Science Foundation (NSF); Simons Foundation; USDOE Office of Science (SC)
Grant/Contract Number:
FG02-05ER41367
OSTI ID:
1609628
Journal Information:
Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 2 Vol. 2019; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (9)

Holographic entanglement entropy and complexity of microstate geometries journal June 2020
Quantum complexity of time evolution with chaotic Hamiltonians journal January 2020
Circuit complexity of knot states in Chern-Simons theory journal July 2019
The connection between holographic entanglement and complexity of purification journal September 2019
Chaos and complexity in quantum mechanics journal January 2020
Path Integral Optimization as Circuit Complexity journal July 2019
First Law of Holographic Complexity journal August 2019
Circuit Complexity of Knot States in Chern-Simons theory text January 2019
Path integral optimization as circuit complexity text January 2019

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