6 papers · 1 filter
Topologically protected quantum bits from Josephson junction arrays
L. B. Ioffe, M. V. Feigel'man, A. Ioselevich +3
All physical implementations of quantum bits (qubits), carrying the information and computation in a putative quantum computer, have to meet the conflicting requirements of environ…
Andreev Spectroscopy for Superconducting Phase Qubits
Mikhail V. Feigel'man, Lev B. Ioffe, Vadim B. Geshkenbein +1
We propose a new method to measure the coherence time of superconducting phase qubits based on the analysis of the magnetic-field dependent dc nonlinear Andreev current across a hi…
Andreev Spectroscopy for Superconductive Phase Qubit
M. V. Feigel'man, V. B. Geshkenbein, L. B. Ioffe +1
New method to probe quantum dynamics of the order parameter phase of a small superconductive island is proposed. The idea is to measure Andreev subgap conductance between the islan…
The density wave phase transition in a two dimensional Fermi liquid is first order
B. L. Altshuler, L. B. Ioffe, A. J. Millis
We study spin density wave transitions in two dimensional Fermi liquids in which the ordering wavevector is such that the tangents to the Fermi line at the points con…
Magnetic Properties of High Temperature Superconductors: a Spin Liquid Approach. Talk given at Stanford Spectroscopy Meeting, 1995.
L. B. Ioffe, A. J. Millis
We argue that strongly correlated two dimensional electrons form a spin liquid in some regimes of density and temperature and give the theory of the magnetic properties of this spi…
On the theory of the spin gap in bilayer cuprates
L. B. Ioffe, A. I. Larkin, A. J. Millis +1
We formulate and solve a model of two planes of antiferromagnetically correlated electrons coupled together by a weak antiferromagnetic interaction of strength . We show that in…