Related Experiment Video
Updated: Jun 23, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Different Fractional Charges from Auto- and Cross-Correlation Noise in Quantum Hall States without Upstream Modes
1Department of Physics, <a href="https://ror.org/05gq02987">Brown University</a>, Providence, Rhode Island 02912, USA and Brown Theoretical Physics Center, <a href="https://ror.org/05gq02987">Brown University</a>, Providence, Rhode Island 02912, USA.
Abstract:
Fractional charges of anyons can be extracted from shot noise in two ways. One can use either the autocorrelation noise of the current in one drain or the cross-correlation noise between two drains on the two sides of the device. The former approach typically overestimates the charge. This may happen due to upstream edge modes. We propose a mechanism for the excess autocorrelation noise without upstream modes. It applies to systems with multiple copropagating edge modes and assumes that the noise is measured at a low but nonzero frequency.
Related Concept Videos
The Hall Effect
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)
2D NMR: Overview of Heteronuclear Correlation Techniques
Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule
¹³C NMR: ¹H–¹³C Decoupling
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...

