title: Towards photonic quantum simulation of ground states of frustrated Heisenberg spin systems.
abstract: Photonic quantum simulators are promising candidates for providing insight into other small- to medium-sized quantum systems. Recent experiments have shown that photonic quantum systems have the advantage to exploit quantum interference for the quantum simulation of the ground state of Heisenberg spin systems. Here we experimentally characterize this quantum interference at a tuneable beam splitter and further investigate the measurement-induced interactions of a simulated four-spin system by comparing the entanglement dynamics using pairwise concurrence. We also study theoretically a four-site square lattice with next-nearest neighbor interactions and a six-site checkerboard lattice, which might be in reach of current technology.
authors.affiliation: 1] Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria [2] Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria [3] Department of Electrical Engineering, Yale University, 15 Prospect Street, New Haven, CT 06520, USA.
authors.forename: Xiao-song
authors.initials: XS
authors.lastname: Ma
authors.affiliation: 1] Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria [2] Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543 [3] Clarendon Laboratory, University of Oxford, Parks Road, Oxford 0X1 3PU, UK.
authors.forename: Borivoje
authors.initials: B
authors.lastname: Dakić
authors.affiliation: Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Kropatschek
authors.affiliation: Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria.
authors.forename: William
authors.initials: W
authors.lastname: Naylor
authors.affiliation: 1] Department of Physics and MCTP, University of Michigan, Ann Arbor, MI 48109, USA [2] Center for Quantum Information, IIIS, Tsinghua University, Beijing, China.
authors.forename: Yang-hao
authors.initials: YH
authors.lastname: Chan
authors.affiliation: 1] Department of Physics and MCTP, University of Michigan, Ann Arbor, MI 48109, USA [2] Center for Quantum Information, IIIS, Tsinghua University, Beijing, China.
authors.forename: Zhe-xuan
authors.initials: ZX
authors.lastname: Gong
authors.affiliation: 1] Department of Physics and MCTP, University of Michigan, Ann Arbor, MI 48109, USA [2] Center for Quantum Information, IIIS, Tsinghua University, Beijing, China.
authors.forename: Lu-ming
authors.initials: LM
authors.lastname: Duan
authors.affiliation: 1] Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria [2] Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria.
authors.forename: Anton
authors.initials: A
authors.lastname: Zeilinger
authors.affiliation: Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria.
authors.forename: Philip
authors.initials: P
authors.lastname: Walther