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pro vyhledávání: '"A. TREBST"'
Frustrated magnets can elude the paradigm of conventional symmetry breaking and instead exhibit signatures of emergent symmetries at low temperatures. Such symmetries arise from "accidental" degeneracies within the ground state manifold and have been
Externí odkaz:
http://arxiv.org/abs/2411.02070
Quantum circuits offer a versatile platform for simulating digital quantum dynamics and uncovering novel states of non-equilibrium quantum matter. One principal example are measurement-induced phase transitions arising from non-unitary dynamics in mo
Externí odkaz:
http://arxiv.org/abs/2409.02171
Local moments with a spin $S>1/2$ can exhibit a rich variety of elementary quasiparticle excitations, such as quadrupolar excitations, that go beyond the dipolar magnons of conventional spin-$1/2$ systems. However, the experimental observation of suc
Externí odkaz:
http://arxiv.org/abs/2405.14954
Publikováno v:
PRX Quantum 5, 040313 (2024)
Teleportation is a facet where quantum measurements can act as a powerful resource in quantum physics, as local measurements allow to steer quantum information in a non-local way. While this has long been established for a single Bell pair, the telep
Externí odkaz:
http://arxiv.org/abs/2403.04767
Autor:
Gembé, Martin, Gresista, Lasse, Schmidt, Heinz-Jürgen, Hickey, Ciarán, Iqbal, Yasir, Trebst, Simon
Publikováno v:
Phys. Rev. B 110, 085151 (2024)
A promising route towards the realization of chiral spin liquids is the quantum melting of classically noncoplanar spin states via quantum fluctuations. In the classical realm, such noncoplanar orders can effectively be stabilized by interactions bey
Externí odkaz:
http://arxiv.org/abs/2402.09400
Publikováno v:
Phys. Rev. B 110, 134443 (2024)
Two-dimensional coherent spectroscopy (2DCS) with terahertz radiation offers a promising new avenue for the exploration of many-body phenomena in quantum magnets. This includes the potential diagnosis of fractionalized excitations, for which linear r
Externí odkaz:
http://arxiv.org/abs/2401.17266
Autor:
Basilewitsch, Daniel, Börner, Simon-Dominik, Berke, Christoph, Altland, Alexander, Trebst, Simon, Koch, Christiane P.
Transmon qubits arise from the quantization of nonlinear resonators, systems that are prone to the buildup of strong, possibly chaotic, fluctuations. Such instabilities will likely affect fast gate operations which involve the transient population of
Externí odkaz:
http://arxiv.org/abs/2311.14592
Autor:
Zhu, Guo-Yi, Trebst, Simon
From the perspective of quantum many-body physics, the Floquet code of Hastings and Haah can be thought of as a measurement-only version of the Kitaev honeycomb model where a periodic sequence of two-qubit XX, YY, and ZZ measurements dynamically stab
Externí odkaz:
http://arxiv.org/abs/2311.08450
Publikováno v:
SciPost Phys. Core 7, 026 (2024)
Feedback-based control is the de-facto standard when it comes to controlling classical stochastic systems and processes. However, standard feedback-based control methods are challenged by quantum systems due to measurement induced backaction and part
Externí odkaz:
http://arxiv.org/abs/2311.00756
Publikováno v:
Phys. Rev. B 108, L241116 (2023)
Quantum antiferromagnets on geometrically frustrated lattices have long attracted interest for the formation of quantum disordered states and the possible emergence of quantum spin liquid (QSL) ground states. Here we turn to the nearest-neighbor spin
Externí odkaz:
http://arxiv.org/abs/2310.02645