Example image of eyePlorer eyePlorer map for 'Quantum cryptography': Quantum mechanics Secure communication Key (cryptography) Message Randomness Information theory Physical system Eavesdrop Quantum entanglement Quantum state Quantum superposition One-way function Public-key cryptography Channel (communications) Encryption Bit Qubit Photon No-cloning theorem Quantum indeterminacy Uncertainty principle BB84 Photon polarization Conjugate variables Optical fiber Alice and Bob Quantum channel Free space Eavesdropping Orthogonality Basis (linear algebra) Circular polarization Linear polarization Eigenvalue, eigenvector and eigenspace Parity bit Binary search algorithm Universal hashing Toshiba University of Cambridge Los Alamos National Institute of Standards and Technology ESA Space Debris Telescope International Space Station DARPA BBN Technologies Boston University Harvard University QinetiQ Id Quantique Hewlett-Packard