552 citations · 7.5k across the 104 of their papers we have counts for
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Entropy spectroscopy of a tunable two-site Hubbard molecule
Uhjin Kim, Seokyeong Lee, Gibum Yun +9
Determining which microscopic states remain thermally active when tunneling and interactions compete is a central question in Hubbard physics. Here we develop an entropy measuremen…
Anomalous Aharonov-Bohm Interference in the Presence of Edge Reconstruction
Sourav Biswas, Hemanta Kumar Kundu, Rajarshi Bhattacharyya +2
Interferometry is a vital tool for studying fundamental features in the quantum Hall effect (QHE). For instance, Aharonov-Bohm (AB) interference in a quantum Hall interferometer ca…
Heat Conductance of the Quantum Hall Bulk
Ron Aharon Melcer, Avigail Gil, Arup-Kumar Paul +6
The Quantum Hall Effect (QHE) is a prototypical realization of a topological state of matter. It emerges from a subtle interplay between topology, interactions, and disorder. The d…
Electron Pairing of Interfering Interface-Based Edge Modes
Sourav Biswas, Hemanta Kumar Kundu, Vladimir Umansky +1
The remarkable Cooper-like pairing phenomenon in the Aharonov-Bohm interference of a Fabry-Perot interferometer (FPI)operating in the integer quantum Hall regimerem…
Observation of Electronic Modes in Open Cavity Resonator
Hwanchul Jung, Dongsung T. Park, Seokyeong Lee +9
The resemblance between electrons and optical waves has strongly driven the advancement of mesoscopic physics. However, electron waves have yet to be understood in open cavity stru…
Measuring statistics-induced entanglement entropy with a Hong-Ou-Mandel interferometer
Gu Zhang, Changki Hong, Tomer Alkalay +4
Despite its ubiquity in quantum computation and quantum information, a universally applicable definition of quantum entanglement remains elusive. The challenge is further accentuat…
Partitioning of Diluted Anyons Reveals their Braiding Statistics
June-Young M. Lee, Changki Hong, Tomer Alkalay +5
Correlations of partitioned particles carry essential information about their quantumness. Partitioning full beams of charged particles leads to current fluctuations, with their au…
Wigner-molecularization-enabled dynamic nuclear field programming
Wonjin Jang, Jehyun Kim, Jaemin Park +8
Multielectron semiconductor quantum dots (QDs) provide a novel platform to study the role of Coulomb correlations in finite quantum systems and their impact on many-body energy spe…
Direct Determination of the Topological Thermal Conductance via Local Power Measurement
Ron Aharon Melcer, Sofia Konyzheva, Moty Heiblum +1
Thermal conductance measurements, sensitive to charge and chargeless energy flow, are evolving as an essential measurement technique in Condensed Matter Physics. For two-dimensiona…
Anyonic interference and braiding phase in a Mach-Zehnder Interferometer
Hemanta Kumar Kundu, Sourav Biswas, Nissim Ofek +2
The fractional quantum Hall states have long been predicted to be a testing ground of fractional (anyonic) exchange statistics. These topological states harbor quasiparticles with…
Does shot noise always provide the quasiparticle charge?
Sourav Biswas, Rajarshi Bhattacharyya, Hemanta Kumar Kundu +5
The fractional charge of quasiparticles is a fundamental feature of quantum Hall effect (QHE) States. The charge has long been measured via shot-noise at moderate temperatures (…
Isolated Ballistic Non-Abelian Interface Channel
Bivas Dutta, Vladimir Umansky, Mitali Banerjee +1
Non-abelian anyons are prospective candidates for fault-tolerant topological quantum computation due to their long-range entanglement. Curiously these quasiparticles are charge-neu…
The Role of Spin-Flip Collisions in a Dark Exciton Condensate
Subhradeep Misra, Michael Stern, Vladimir Umansky +1
We show that a Bose-Einstein condensate consisting of dark excitons forms in GaAs coupled quantum wells at low temperatures. We find that the condensate extends over hundreds of mi…
Absent thermal equilibration on fractional quantum Hall edges over macroscopic scale
Ron Aharon Melcer, Bivas Dutta, Christian Spånslätt +3
Two-dimensional topological insulators, and in particular quantum Hall states, are characterized by an insulating bulk and a conducting edge. Fractional states may host both downst…
Novel method distinguishing between competing topological orders
Bivas Dutta, Wenmin Yang, Ron Aharon Melcer +6
Quantum Hall states - the progenitors of the growing family of topological insulators -- are rich source of exotic quantum phases. The nature of these states is reflected in the ga…
Three individual two-axis control of singlet-triplet qubits in a micromagnet integrated quantum dot array
Wonjin Jang, Min-Kyun Cho, Jehyun Kim +3
We report individual confinement and two-axis qubit operations of two electron spin qubits in GaAs gate-defined sextuple quantum dot array with integrated micro-magnet. As a first…
Energy relaxation in edge modes in the quantum Hall effect
Amir Rosenblatt, Sofia Konyzheva, Fabien Lafont +6
Studies of energy flow in quantum systems complement the information provided by common conductance measurements. The quantum limit of heat flow in one dimensional (1D) ballistic m…
Coherent Electron Optics with Ballistically Coupled Quantum Point Contacts
Jaan Freudenfeld, Max Geier, Vladimir Umansky +2
The realization of integrated quantum circuits requires precise on-chip control of charge carriers. Aiming at the coherent coupling of distant nanostructures at zero magnetic field…
Electrostatic potential shape of gate defined quantum point contacts
Max Geier, Jaan Freudenfeld, Jorge T. Silva +5
Quantum point contacts (QPC) are fundamental building blocks of nanoelectronic circuits. For their emission dynamics as well as for interaction effects such as the 0.7-anomaly the…
Fast raster scan multiplexed charge stability measurements toward high-throughput quantum dot array calibration
Wonjin Jang, Min-Kyun Cho, Myungwon Lee +6
We report raster scan multiplexed charge-stability diagram measurements for tuning multiple gate-defined quantum dots in GaAs/AlGaAs heterostructures. We evaluate the charge sensit…
Melting of interference in the fractional quantum Hall effect: Appearance of neutral modes
R. Bhattacharyya, Mitali Banerjee, Moty Heiblum +2
Electrons living in a two-dimensional world under a strong magnetic field - the so-called fractional quantum Hall effect (FQHE) - often manifest themselves as fractionally charged…
Synthesizing a Fractional v=2/3 State from Particle and Hole States
Yonatan Cohen, Yuval Ronen, Wenmin Yang +6
Topological edge-reconstruction occurs in hole-conjugate states of the fractional quantum Hall effect. The frequently studied polarized state of filling factor v=2/3 was originally…
Counter-propagating charge transport in the quantum Hall effect regime
Fabien Lafont, Amir Rosenblatt, Moty Heiblum +1
The quantum Hall effect, observed in a two-dimensional electron gas subjected to a perpendicular magnetic field, imposes a 1D-like chiral, downstream, transport of charge carriers…
Attractive Coulomb interactions in a triple quantum dot
Changki Hong, Gwangsu Yoo, Jinhong Park +7
Electron pairing due to a repulsive Coulomb interaction in a triple quantum dot (TQD) is experimentally studied. It is found that electron pairing in two dots of a TQD is mediated…