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TT: Fachverband Tiefe Temperaturen

TT 3: Focus Session: Entanglement as a Probe for Correlated Quantum Matter

Montag, 27. September 2021, 13:30–16:15, H6

The interplay of quantum fluctuations and correlations in many-body systems can result in novel phases with exciting physical phenomena. Celebrated examples are the fractional quantum Hall effect and quantum spin liquids. A generic property of such phases is their non- local entanglement that manifests itself in topological order and fractionalized particle-like excitations. Excitingly, it has been proposed that such topologically ordered phases might be an ideal building block for a fault-tolerant quantum computer. While recent experiments pinpointed the presence of fractionalized excitations in spin-liquid materials, the characteristic underlying property of non-local entanglement remains elusive and evades a direct experimental probe.

Organizers: Alexander Tsirlin (Augsburg University), Frank Pollmann (Technical University Munich)

	13:30	TT 3.1	Measuring quantum entanglement with neutrons — •Alan Tennant
	14:00	TT 3.2	Observation of E8 particles in Ising chain quantum magnets — •Zhe Wang
	14:30		15 min. break
	14:45	TT 3.3	Topologically ordered systems on the digital quantum processor — Kevin Satzinger, •Yujie Liu, Adam Smith, Christina Knapp, Michael Knap, Kirill Schtengel, Pedram Roushan, and Frank Pollmann
	15:15	TT 3.4	Robustness of the thermal Hall effect close to half-quantization in a field-induced spin liquid state — •Jan Bruin, Ralf Claus, Yosuke Matsumoto, Nobuyuki Kurita, Hidekazu Tanaka, and Hidenori Takagi
	15:30	TT 3.5	Angle-dependent thermodynamic measurements on α-RuCl3 — •Sebastian Bachus, David Kaib, Anton Jesche, Yoshifumi Tokiwa, Vladimir Tsurkan, Alois Loidl, Stephen Winter, Alexander Tsirlin, Roser Valentí, and Philipp Gegenwart
	15:45	TT 3.6	Comparative study of the triangular spin-liquid candidates NaYbO2, KYbO2 and KYbS2 — •Franziska Grußler, Sebastian Bachus, Noah Winterhalter-Stocker, Philipp Gegenwart, and Alexander Tsirlin
	16:00	TT 3.7	Structural and thermodynamic properties of the spin-liquid candidate Na2BaCo(PO4)2 — •Vera P. Bader, Alexander A. Tsirlin, Ivo Heinmaa, Raivo Stern, Noah Winterhalter-Stocker, and Philipp Gegenwart