Correction: Estimating the link budget of satellite-based Quantum Key Distribution (QKD) for uplink transmission through the atmosphere

The article provides a detailed link budget calculation for various Indian locations, which is highly dependent on the input parameters like the choice of wavelength and beam divergence.Due to algebraic corrections and typographical revisions, the link loss values presented in Tables 1, 3 and 4 have been revised.This leads to changes in keyrate and QBER values reported in Tables 5, 6 and 7 in the main article.Table 1 gives the modified link budget calculation for the signal beam at 810 nm with a chosen 20 rad divergence.This leads to a smaller footprint of the signal at the receiver located 500 km away in a LEO satellite.This is required for optimal signal transmittance.Also, we add the loss due to beam wander in row number 6, which was earlier missing in the table.The changes in Table 1 are listed below.