http://xxx.lanl.gov/find/grp_physics/1/ti:+EXACT+entanglement_entropy/0/1/0/all/0/1wam_mi said:(ii) where can I find useful sources of this subject apart from Wikipedia?
Entanglement entropy is a measure of how much quantum information is shared between two or more entangled systems. It is a fundamental concept in quantum physics and plays a crucial role in understanding the behavior of complex quantum systems.
Entanglement entropy has many applications in current research, including quantum computing, quantum information theory, and condensed matter physics. It helps us understand the connections between seemingly unrelated systems and can provide insights into the nature of quantum entanglement.
There are several methods for measuring entanglement entropy, including the use of entanglement witnesses, quantum tomography, and entanglement entropy estimators. Each method has its advantages and limitations, and researchers often use a combination of methods to get a more accurate measurement.
Entanglement entropy can arise in various physical systems, such as spin chains, quantum field theories, and many-body systems. It can also be observed in experiments involving quantum particles, such as photons and electrons, that become entangled through interactions with each other.
Entanglement entropy is a quantitative measure of quantum entanglement, which describes the correlation between two or more quantum systems. It is a way to quantify the amount of entanglement present in a system and helps us understand the complexity of entangled quantum states.