482 citations · 2.4k across the 19 of their papers we have counts for
20 papers
Distilled remote entanglement between superconducting qubits across optical channels
Nicolas Dirnegger, Moein Malekakhlagh, Vikesh Siddhu +5
A promising quantum computing architecture comprises modules of superconducting quantum processors linked via optical channels using quantum transducers. As quantum transducer hard…
Ultrahigh- on-chip silicon-germanium microresonators
Ryan Schilling, Chi Xiong, Swetha Kamlapurkar +7
We demonstrate fully crystalline, single-mode ultrahigh quality factor integrated microresonators comprising epitaxially grown SiGe waveguide cores with silicon c…
Multiple Tunable Hyperbolic Resonances in Broadband Infrared Carbon-Nanotube Metamaterials
John Andris Roberts, Po-Hsun Ho, Shang-Jie Yu +5
Aligned, densely-packed carbon nanotube metamaterials prepared using vacuum filtration are an emerging infrared nanophotonic material. We report multiple hyperbolic plasmon resonan…
Quantum well stabilized point defect spin qubits
Ivády, J. Davidsson, N. Delegan +10
Defect-based quantum systems in in wide bandgap semiconductors are strong candidates for scalable quantum-information technologies. However, these systems are often complicated by…
Tunable Hyperbolic Metamaterials Based on Self-Assembled Carbon Nanotubes
John Andris Roberts, Shang-Jie Yu, Po-Hsun Ho +3
We show that packed, horizontally aligned films of single-walled carbon nanotubes are hyperbolic metamaterials with ultra-subwavelength unit cells and dynamic tunability. Using Mue…
Intrinsically ultrastrong plasmon-exciton interactions in crystallized films of carbon nanotubes
Po-Hsun Ho, Damon B. Farmer, George S. Tulevski +6
In cavity quantum electrodynamics, optical emitters that are strongly coupled to cavities give rise to polaritons with characteristics of both the emitters and the cavity excitatio…
Strong and broadly tunable plasmon resonances in thick films of aligned carbon nanotubes
Kuan-Chang Chiu, Abram L. Falk, Po-Hsun Ho +5
Low-dimensional plasmonic materials can function as high quality terahertz and infrared antennas at deep subwavelength scales. Despite these antennas' strong coupling to electromag…
Coherent plasmon and phonon-plasmon resonances in carbon nanotubes
Abram L. Falk, Kuan-Chang Chiu, Damon B. Farmer +5
Carbon nanotubes provide a rare access point into the plasmon physics of one-dimensional electronic systems. By assembling purified nanotubes into uniformly sized arrays, we show t…
Quantum decoherence dynamics of divacancy spins in silicon carbide
Hosung Seo, Abram L. Falk, Paul V. Klimov +3
Long coherence times are key to the performance of quantum bits (qubits). Here, we experimentally and theoretically show that the Hahn-echo coherence time (T2) of electron spins as…
High fidelity bi-directional nuclear qubit initialization in SiC
Viktor Ivády, Paul V. Klimov, Kevin C. Miao +6
Dynamic nuclear polarization (DNP) is an attractive method for initializing nuclear spins that are strongly coupled to optically active electron spins because it functions at room…
Theoretical model of the dynamic spin polarization of nuclei coupled to paramagnetic point defects in diamond and silicon carbide
Viktor Ivády, Krisztián Szász, Abram L. Falk +6
Dynamic nuclear spin polarization (DNP) mediated by paramagnetic point defects in semiconductors is a key resource for both initializing nuclear quantum memories and producing nucl…
Optical polarization of nuclear spins in silicon carbide
Abram L. Falk, Paul V. Klimov, Viktor Ivády +5
We demonstrate optically pumped dynamic nuclear polarization of 29-Si nuclear spins that are strongly coupled to paramagnetic color centers in 4H- and 6H-SiC. The 99 +/- 1% degree…
Isolated electron spins in silicon carbide with millisecond-coherence times
David J. Christle, Abram L. Falk, Paolo Andrich +6
The elimination of defects from SiC has facilitated its move to the forefront of the optoelectronics and power-electronics industries. Nonetheless, because the electronic states of…
Electrically and mechanically tunable electron spins in silicon carbide color centers
Abram L. Falk, Paul V. Klimov, Bob B. Buckley +6
The electron spins of semiconductor defects can have complex interactions with their host, particularly in polar materials like SiC where electrical and mechanical variables are in…
Electrically driven spin resonance in silicon carbide color centers
P. V. Klimov, A. L. Falk, B. B. Buckley +1
We demonstrate that the spin of optically addressable point defects can be coherently driven with AC electric fields. Based on magnetic-dipole forbidden spin transitions, this sche…
Polytype control of spin qubits in silicon carbide
Abram L. Falk, Bob B. Buckley, Greg Calusine +6
Crystal defects can confine isolated electronic spins and are promising candidates for solid-state quantum information. Alongside research focusing on nitrogen vacancy centers in d…
Spin Coherence During Optical Excitation of a Single NV Center in Diamond
G. D. Fuchs, A. L. Falk, V. V. Dobrovitski +1
We examine the quantum spin state of a single nitrogen-vacancy (NV) center in diamond at room temperature as it makes a transition from the orbital ground-state (GS) to the orbital…
Gate-activated photoresponse in a graphene p-n junction
M. C. Lemme, F. H. L. Koppens, A. L. Falk +4
We study photodetection in graphene near a local electrostatic gate, which enables active control of the potential landscape and carrier polarity. We find that a strong photorespon…
Near-field Electrical Detection of Optical Plasmons and Single Plasmon Sources
Abram L. Falk, Frank H. L. Koppens, Chun L. Yu +6
Photonic circuits can be much faster than their electronic counterparts, but they are difficult to miniaturize below the optical wavelength scale. Nanoscale photonic circuits based…
Magnetic Switching of Phase-Slip Dissipation in NbSe2 Nanobelts
Abram Falk, Mandar M. Deshmukh, Amy L. Prieto +3
The stability of the superconducting dissipationless and resistive states in single-crystalline NbSe2 nanobelts is characterized by transport measurements in an external magnetic f…